History of multitrack recording
Encyclopedia
Though GE researcher Charles Hoxie invented the pallophotophone
Pallophotophone
The pallophotophone was an audio recording device developed by General Electric researcher Charles Hoxie ca. 1922...

  (a machine that used 35mm film to optically record multiple tracks of sound) in 1922, modern multitrack recording began in 1943 with the invention of stereo
STEREO
STEREO is a solar observation mission. Two nearly identical spacecraft were launched into orbits that cause them to respectively pull farther ahead of and fall gradually behind the Earth...

 sound, which divided the recording head into two tracks.

Overview

Multitrack recording
Multitrack recording
Multitrack recording is a method of sound recording that allows for the separate recording of multiple sound sources to create a cohesive whole...

 is a process in which the tape is divided into multiple tracks parallel with each other. Because they are carried on the same medium, the tracks stay in perfect synchronisation. The first development in multitracking was stereo sound, which divided the recording head into two tracks. First developed by German audio engineers ca. 1943, 2-track recording was rapidly adopted for modern music in the 1950s because it enabled signals from two or more separate microphones to be recorded simultaneously, enabling stereophonic recordings to be made and edited conveniently. (The first stereo recordings, on disks, had been made in the 1930s, but were never issued commercially.) Stereo (either true, two-microphone stereo or multimixed) quickly became the norm for commercial classical recordings and radio broadcasts, although many pop music and jazz recordings continued to be issued in monophonic sound until the mid-1960s.

Much of the credit for the development of multitrack recording goes to guitarist, composer and technician Les Paul
Les Paul
Lester William Polsfuss —known as Les Paul—was an American jazz and country guitarist, songwriter and inventor. He was a pioneer in the development of the solid-body electric guitar which made the sound of rock and roll possible. He is credited with many recording innovations...

, who also helped design the famous electric guitar that bears his name. His experiments with tapes and recorders in the early 1950s led him to order the first custom-built eight-track recorder from Ampex, and his pioneering recordings with his then wife, singer Mary Ford
Mary Ford
Mary Ford , born Iris Colleen Summers, was an American vocalist and guitarist, comprising half of the husband-and-wife musical team Les Paul and Mary Ford. Between 1950 and 1954, the couple had 16 top-ten hits...

, were the first to make use of the technique of multitracking to record separate elements of a musical piece asynchronously — that is, separate elements could be recorded at different times. Paul's technique enabled him to listen to the tracks he had already taped and record new parts in time alongside them.

Multitrack recording was immediately taken up in a limited way by Ampex
Ampex
Ampex is an American electronics company founded in 1944 by Alexander M. Poniatoff. The name AMPEX is an acronym, created by its founder, which stands for Alexander M. Poniatoff Excellence...

, who soon produced a commercial 3-track recorder. These proved extremely useful for popular music, since they enabled backing music to be recorded on two tracks (either to allow the overdubbing of separate parts, or to create a full stereo backing track) while the third track was reserved for the lead vocalist. Three-track recorders remained in widespread commercial use until the mid-1960s and many famous pop recordings — including many of Phil Spector
Phil Spector
Phillip Harvey "Phil" Spector is an American record producer and songwriter, later known for his conviction in the murder of actress Lana Clarkson....

's so-called "Wall of Sound" productions and early Motown hits — were taped on Ampex 3-track recorders.

The next important development was 4-track recording. The advent of this improved system gave recording engineers and musicians vastly greater flexibility for recording and overdubbing, and 4-track was the studio standard for most of the later 1960s. Engineer Tom Dowd
Tom Dowd
Tom Dowd was an American recording engineer and producer for Atlantic Records. He was credited with innovating the multi-track recording method. Dowd worked on a virtual "who's who" of recordings that encompassed blues, jazz, pop, rock and soul records.- Early years :Born in Manhattan, Dowd grew...

 was among the first to utilise 4-track recording for popular music production while working for Atlantic Records
Atlantic Records
Atlantic Records is an American record label best known for its many recordings of rhythm and blues, rock and roll, and jazz...

 during the 1950s. Many of the most famous recordings by The Beatles
The Beatles
The Beatles were an English rock band, active throughout the 1960s and one of the most commercially successful and critically acclaimed acts in the history of popular music. Formed in Liverpool, by 1962 the group consisted of John Lennon , Paul McCartney , George Harrison and Ringo Starr...

 and The Rolling Stones
The Rolling Stones
The Rolling Stones are an English rock band, formed in London in April 1962 by Brian Jones , Ian Stewart , Mick Jagger , and Keith Richards . Bassist Bill Wyman and drummer Charlie Watts completed the early line-up...

 were recorded on 4-track, and the engineers at London's Abbey Road Studios
Abbey Road Studios
Abbey Road Studios is a recording studio located at 3 Abbey Road, St John's Wood, City of Westminster, London, England. It was established in November 1931 by the Gramophone Company, a predecessor of British music company EMI, its present owner...

 became particularly adept at the technique called "reduction mixes" in the UK and "bouncing down" in the United States, in which multiple tracks were recorded onto one 4-track machine and then mixed together and transferred (bounced down) to one track of a second 4-track machine. In this way, it was possible to record literally dozens of separate tracks and combine them into finished recordings of great complexity.

All of the Beatles classic mid-60s recordings, including the albums Revolver
Revolver (album)
Revolver is the seventh studio album by the English rock group The Beatles, released on 5 August 1966 on the Parlophone label and produced by George Martin. Many of the tracks on Revolver are marked by an electric guitar-rock sound, in contrast with their previous LP, the folk rock inspired Rubber...

and Sgt Pepper's Lonely Hearts Club Band, were recorded in this way. There were limitations, however, because of the build-up of noise during the bouncing-down process, and the Abbey Road engineers are still justly famed for the ability to create dense multitrack recordings while keeping background noise to a minimum.

4-track tape also led to a related development, quadraphonic
Quadraphonic
Quadraphonic sound – the most widely used early term for what is now called 4.0 surround sound – uses four channels in which speakers are positioned at the four corners of the listening space, reproducing signals that are independent of one another...

 sound, in which each of the four tracks was used to simulate a complete 360-degree surround sound. A number of albums including Pink Floyd's The Dark Side of the Moon
The Dark Side of the Moon
The Dark Side of the Moon is the eighth studio album by English progressive rock band Pink Floyd, released in March 1973. It built on ideas explored in the band's earlier recordings and live shows, but lacks the extended instrumental excursions that characterised their work following the departure...

and Mike Oldfield's Tubular Bells
Tubular Bells
Tubular Bells is the debut record album of English musician Mike Oldfield, released in 1973. It was the first album released by Virgin Records and an early cornerstone of the company's success...

were released both in stereo and quadrophonic format in the 1970s, but 'quad' failed to gain wide commercial acceptance. Although it is now considered a gimmick, it was the direct precursor of the surround sound
Surround sound
Surround sound encompasses a range of techniques such as for enriching the sound reproduction quality of an audio source with audio channels reproduced via additional, discrete speakers. Surround sound is characterized by a listener location or sweet spot where the audio effects work best, and...

 technology that has become standard in many modern home theatre systems.

In a professional audio
Professional audio
Professional audio, also 'pro audio', refers to both an activity and a type of audio equipment. Typically it encompasses the production or reproduction of sound for an audience, by individuals who do such work as an occupation like live event support, using sound reinforcement systems designed for...

 setting today, such as a recording studio
Recording studio
A recording studio is a facility for sound recording and mixing. Ideally both the recording and monitoring spaces are specially designed by an acoustician to achieve optimum acoustic properties...

, audio engineers may use 24 tracks or more for their recordings, utilizing one or more tracks for each instrument played.

The combination of the ability to edit via tape splicing, and the ability to record multiple tracks, revolutionised studio recording. It became common studio recording practice to record on multiple tracks, and mix down afterward. The convenience of tape editing and multitrack recording led to the rapid adoption of magnetic tape
Magnetic tape
Magnetic tape is a medium for magnetic recording, made of a thin magnetizable coating on a long, narrow strip of plastic. It was developed in Germany, based on magnetic wire recording. Devices that record and play back audio and video using magnetic tape are tape recorders and video tape recorders...

 as the primary technology for commercial musical recordings. Although 33⅓ rpm and 45 rpm vinyl records were the dominant consumer format, recordings were customarily made first on magnetic tape
Magnetic tape
Magnetic tape is a medium for magnetic recording, made of a thin magnetizable coating on a long, narrow strip of plastic. It was developed in Germany, based on magnetic wire recording. Devices that record and play back audio and video using magnetic tape are tape recorders and video tape recorders...

, then transferred to disc, with Bing Crosby
Bing Crosby
Harry Lillis "Bing" Crosby was an American singer and actor. Crosby's trademark bass-baritone voice made him one of the best-selling recording artists of the 20th century, with over half a billion records in circulation....

 leading the way in the adoption of this method in the United States.

Ampex's original 8-track recorder

The original Ampex 8-track recorder, model 5258, was an internal Ampex project. It was based on an Ampex 1" data recorder transport with modified Ampex model 350 electronics. It stood over 7 feet (2.1 m) tall and weighed 250 pounds (113.4 kg). 8 tracks were chosen because that was the number of 0.07 inches (1.8 mm) recording tracks with 0.06 inches (1.5 mm) guard tracks that would fit on a 1 inches (25.4 mm) recording tape, the widest tape available at the time. These are the track widths used in all professional analog multitrack recorders except 24-track recorders

The first of the Ampex 8-track recorders was sold to Les Paul
Les Paul
Lester William Polsfuss —known as Les Paul—was an American jazz and country guitarist, songwriter and inventor. He was a pioneer in the development of the solid-body electric guitar which made the sound of rock and roll possible. He is credited with many recording innovations...

 for $10,000 in 1957 and was installed in his home recording studio by David Sarser
David Sarser
David Sarser is an American musician, audio engineer and electronics designer. He played violin with the NBC Symphony Orchestra in the 1950s under Arturo Toscanini and worked with Les Paul in the design of the first 8 track recording deck He has not played the violin since his Stradivarius was...

. It became known as the "Octopus".

The second Ampex model 5258 8-track 3 was sold to Atlantic Records
Atlantic Records
Atlantic Records is an American record label best known for its many recordings of rhythm and blues, rock and roll, and jazz...

 at Tom Dowd's
Tom Dowd
Tom Dowd was an American recording engineer and producer for Atlantic Records. He was credited with innovating the multi-track recording method. Dowd worked on a virtual "who's who" of recordings that encompassed blues, jazz, pop, rock and soul records.- Early years :Born in Manhattan, Dowd grew...

 instance in early 1958. Atlantic was the first record company to use a multi-track recorder in their studio.

Multi-channel recorders

Multi-track recording differs from overdubbing
Overdubbing
Overdubbing is a technique used by recording studios to add a supplementary recorded sound to a previously recorded performance....

 and sound on sound because it records separate signals to individual tracks. Sound on sound which Les Paul invented adds a new performance to an existing recording by placing a second playback head in front of the erase head to playback the existing track before erasing it and re-recording a new track.

Multi-track recorders also differs from early stereo and three track recorders that were available at the time in that they can record individual tracks while preserving the other tracks. The original multi-channel recorders could only record all tracks at once.

The earliest multitrack recorders were analog magnetic tape machines with two or three tracks. Elvis Presley
Elvis Presley
Elvis Aaron Presley was one of the most popular American singers of the 20th century. A cultural icon, he is widely known by the single name Elvis. He is often referred to as the "King of Rock and Roll" or simply "the King"....

 was first recorded on multitrack during 1957, as RCA
RCA
RCA Corporation, founded as the Radio Corporation of America, was an American electronics company in existence from 1919 to 1986. The RCA trademark is currently owned by the French conglomerate Technicolor SA through RCA Trademark Management S.A., a company owned by Technicolor...

's engineers were testing their new machines. Buddy Holly
Buddy Holly
Charles Hardin Holley , known professionally as Buddy Holly, was an American singer-songwriter and a pioneer of rock and roll...

's last studio session in 1958 employed three-track, resulting in his only stereo releases not to include overdubs. The new three-track system allowed the lead vocal to be recorded on a dedicated track, while the remaining two tracks could be used to record the backing tracks in full stereo.

Other early multi-track recorders

Frank Zappa
Frank Zappa
Frank Vincent Zappa was an American composer, singer-songwriter, electric guitarist, record producer and film director. In a career spanning more than 30 years, Zappa wrote rock, jazz, orchestral and musique concrète works. He also directed feature-length films and music videos, and designed...

 experimented in the early 1960s with a five-track recorder built by recording engineer Paul Buff in his Pal Recording Studio
Pal Recording Studio
Pal Recording Studio was an independent recording studio that operated in Cucamonga, California The studio was started by engineer/innovator Paul Buff. The studio is known for its instrumental Surf music recordings like Wipeout and the original demo recording of Pipeline. The original location...

 in Rancho Cucamonga, California
Rancho Cucamonga, California
Rancho Cucamonga is a suburban city in San Bernardino County, California. As of the 2010 census, the city had a population of 165,269, up from 127,743 at the 2000 census. L. Dennis Michael was elected as Mayor on November 2, 2010. Jack Lam is the City Manager...

. However, recorders with four or more tracks were restricted mainly to American recording studios until the mid-to-late Sixties, mainly because of import restrictions and the high cost of the technology. In England, pioneering independent producer Joe Meek
Joe Meek
Robert George "Joe" Meek was a pioneering English record producer and songwriter....

 produced all of his innovative early Sixties recordings using monophonic recorders. EMI
EMI
The EMI Group, also known as EMI Music or simply EMI, is a multinational music company headquartered in London, United Kingdom. It is the fourth-largest business group and family of record labels in the recording industry and one of the "big four" record companies. EMI Group also has a major...

 house producer George Martin
George Martin
Sir George Henry Martin CBE is an English record producer, arranger, composer and musician. He is sometimes referred to as "the Fifth Beatle"— a title that he often describes as "nonsense," but the fact remains that he served as producer on all but one of The Beatles' original albums...

 was considered an innovator for his use of two-track as a means to making better mono records, carefully balancing vocals and instruments; Abbey Road Studios
Abbey Road Studios
Abbey Road Studios is a recording studio located at 3 Abbey Road, St John's Wood, City of Westminster, London, England. It was established in November 1931 by the Gramophone Company, a predecessor of British music company EMI, its present owner...

 installed Studer four-track machines in 1959 and 1960, but The Beatles
The Beatles
The Beatles were an English rock band, active throughout the 1960s and one of the most commercially successful and critically acclaimed acts in the history of popular music. Formed in Liverpool, by 1962 the group consisted of John Lennon , Paul McCartney , George Harrison and Ringo Starr...

 would not have access to them until late 1963, and all recordings prior to their first world hit single I Want to Hold Your Hand
I Want to Hold Your Hand
"I Want to Hold Your Hand" is a song by the English rock band The Beatles. Written by John Lennon and Paul McCartney, and recorded in October 1963, it was the first Beatles record to be made using four-track equipment....

(1964) were made on two-track machines.

Impact on popular music

The artistic potential of the multitrack recorder came to the attention of the public in the 1960s, when artists such as the Beatles
The Beatles
The Beatles were an English rock band, active throughout the 1960s and one of the most commercially successful and critically acclaimed acts in the history of popular music. Formed in Liverpool, by 1962 the group consisted of John Lennon , Paul McCartney , George Harrison and Ringo Starr...

 and the Beach Boys
The Beach Boys
The Beach Boys are an American rock band, formed in 1961 in Hawthorne, California. The group was initially composed of brothers Brian, Dennis and Carl Wilson, their cousin Mike Love, and friend Al Jardine. Managed by the Wilsons' father Murry, The Beach Boys signed to Capitol Records in 1962...

 began to multitrack extensively, and from then on virtually all popular music was recorded in this manner. The technology developed very rapidly during these years. At the start of their careers, the Beatles and Beach Boys each recorded live to mono, two-track (the Beatles), or three-track (the Beach Boys); by 1965 they used multitracking to create pop music of unprecedented complexity.

The Beach Boys' acclaimed 1966 LP Pet Sounds
Pet Sounds
Pet Sounds is the eleventh studio album by the American rock band The Beach Boys, released May 16, 1966, on Capitol Records. It has since been recognized as one of the most influential records in the history of popular music and one of the best albums of the 1960s, including songs such as "Wouldn't...

relied on multitrack recorders for its innovative production. Brian Wilson
Brian Wilson
Brian Douglas Wilson is an American musician, best known as the leader and chief songwriter of the group The Beach Boys. Within the band, Wilson played bass and keyboards, also providing part-time lead vocals and, more often, backing vocals, harmonizing in falsetto with the group...

 pretaped all the instrumental backing tracks with a large ensemble, recording the performances live, direct to a four-track recorder. These four-track backing tapes were then 'dubbed down
Overdubbing
Overdubbing is a technique used by recording studios to add a supplementary recorded sound to a previously recorded performance....

' to one track of an eight-track tape. Six of the remaining seven tracks were then used to individually record the vocals of each member of The Beach Boys, and the eighth track was reserved for any final 'sweetening' overdubs of instruments or voices.

3M
3M
3M Company , formerly known as the Minnesota Mining and Manufacturing Company, is an American multinational conglomerate corporation based in Maplewood, Minnesota, United States....

 introduced the 1-inch eight-track version of their model M-23 recorder in 1966, probably the first mass-produced machine of this format. It remained in production until 1970 and was used by many top studios worldwide including Abbey Road Studios in London. Both Pete Townshend
Pete Townshend
Peter Dennis Blandford "Pete" Townshend is an English rock guitarist, vocalist, songwriter and author, known principally as the guitarist and songwriter for the rock group The Who, as well as for his own solo career...

 and John Lennon
John Lennon
John Winston Lennon, MBE was an English musician and singer-songwriter who rose to worldwide fame as one of the founding members of The Beatles, one of the most commercially successful and critically acclaimed acts in the history of popular music...

 had 3M 8-track machines in their home project studios circa 1969-1970. Ampex began mass production of their competing 1-inch eight-track MM1000 in 1967. One of the first 8-track machines in Los Angeles was built by Scully Recording Instruments of Bridgeport, Connecticut and installed at American Recorders in late 1967. The debut album by Steppenwolf
Steppenwolf (band)
Steppenwolf are a Canadian-American rock group that was prominent in the late 1960s. The group was formed in 1967 in Los Angeles by vocalist John Kay, guitarist Michael Monarch, bassist Rushton Moreve, keyboardist Goldy McJohn and drummer Jerry Edmonton after the dissolution of Toronto group The...

 was recorded there and was released in January 1968.

Because the Beatles did not gain access to eight-track recorders until 1968 their groundbreaking Sgt Pepper's Lonely Hearts Club Band LP (1967) was created using pairs of four-track machines; the group also used vari-speed (also called pitch shift
Pitch shift
Pitch shifting is a sound recording technique in which the original pitch of a sound is raised or lowered. Effects units that raise or lower pitch by a pre-designated musical interval are called "pitch shifters" or "pitch benders".-Pitch/time shifting:...

) to achieve unique sounds, and they were the first group in the world to use an important offshoot of multitrack recording, the Automatic Double Tracking
Automatic double tracking
Automatic double-tracking or artificial double-tracking was an analogue recording technique designed to enhance the sound of voices or instruments during the recording process. It used tape delay to create a delayed copy of an audio signal which was then combined with the original...

 (ADT) system invented by Abbey Road staff engineer Ken Townsend in 1966.

Other artists began experimenting with multitrack's possibilities also, with the Music Machine
The Music Machine
The Music Machine was an American garage rock and psychedelic band from the late 1960s, headed by singer-songwriter Sean Bonniwell and based in Los Angeles. The band sound was often defined by fuzzy guitars and a Farfisa organ...

 (of "Talk Talk" fame) recording on a custom-built ten-track setup, and Pink Floyd
Pink Floyd
Pink Floyd were an English rock band that achieved worldwide success with their progressive and psychedelic rock music. Their work is marked by the use of philosophical lyrics, sonic experimentation, innovative album art, and elaborate live shows. Pink Floyd are one of the most commercially...

 collaborating with former Beatles recording engineer Norman "Hurricane" Smith, who produced their first albums.

The first eight-track recorder in the UK was built by Scully and installed at London's Advision Studios
Advision Studios
- Origins :Founded in the 1960s by Guy Whetstone and Stephen Appleby, Advision originally provided voiceovers and jingles for television advertisements. The studio was initially located at 83 New Bond Street, but moved to 23 Gosfield Street in 1969. The studio complex was built to be able to house...

 in early 1968. Among the first eight-track recordings made there were the single Dogs
Dogs (The Who song)
"Dogs" is a U.K single released by The Who in June 1968. It reached number 25 on the UK singles chart. The B-side of the U.K. single was "Call Me Lightning." Both songs were originally released mixed in mono only, as they were not originally intended for album release.The lyrics of Dogs were...

by The Who
The Who
The Who are an English rock band formed in 1964 by Roger Daltrey , Pete Townshend , John Entwistle and Keith Moon . They became known for energetic live performances which often included instrument destruction...

 and the album My People Were Fair and Had Sky in Their Hair... But Now They're Content to Wear Stars on Their Brows by the band Tyrannosaurus Rex
T. Rex (band)
T. Rex were a British rock band, formed in 1967 by singer/songwriter and guitarist Marc Bolan. The band formed as Tyrannosaurus Rex, releasing four folk albums under the name...

. Trident Studios
Trident Studios
Trident Studios was a British recording facility, originally located at 17 St. Anne's Court in London's Soho district. It was constructed in 1967 by Norman Sheffield a drummer of former 1960's group The Hunters and his Brother Barry....

 obtained their first eight-track recorder soon afterward. It was during the White Album sessions of late 1968 that EMI
EMI
The EMI Group, also known as EMI Music or simply EMI, is a multinational music company headquartered in London, United Kingdom. It is the fourth-largest business group and family of record labels in the recording industry and one of the "big four" record companies. EMI Group also has a major...

's Abbey Road Studios
Abbey Road Studios
Abbey Road Studios is a recording studio located at 3 Abbey Road, St John's Wood, City of Westminster, London, England. It was established in November 1931 by the Gramophone Company, a predecessor of British music company EMI, its present owner...

 finally had eight-track recorders installed, until then the group went to Trident to record with eight-tracks. The Beatles used eight-track to record portions of the White Album, the single "Hey Jude
Hey Jude
"Hey Jude" is a song by the English rock band The Beatles, written by Paul McCartney and credited to Lennon–McCartney. The ballad evolved from "Hey Jules", a song widely accepted as being written to comfort John Lennon's son, Julian, during his parents' divorce—although this explanation is not...

" and the later Abbey Road.

Other western countries also lagged well behind the USA – in Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

, the largest local recording label, Festival Records
Festival Records (Australia)
Festival Records was an Australian music recording and publishing company which was founded in Sydney in 1952 and operated until 2005....

, did not install a four-track recorder until late 1966; the first eight-track recorders did not appear there until the late Sixties;

Large Format Professional Analog Recorders

In 1967 Ampex
Ampex
Ampex is an American electronics company founded in 1944 by Alexander M. Poniatoff. The name AMPEX is an acronym, created by its founder, which stands for Alexander M. Poniatoff Excellence...

 built its first prototype 16-track professional audio
Professional audio
Professional audio, also 'pro audio', refers to both an activity and a type of audio equipment. Typically it encompasses the production or reproduction of sound for an audience, by individuals who do such work as an occupation like live event support, using sound reinforcement systems designed for...

 recorder at the request of Mirasound Studios in New York City. This machine used reels of 2-inch tape on a modified tape transport system originally built for video recording. In 1968 it introduced the 16-track production model MM-1000, the first commercially available 16-track machine. Machines of this size are difficult to move and costly to maintain. Prices were very high, typically $10,000 to $30,000 U.S. dollars. Crimson And Clover
Crimson and Clover
"Crimson and Clover" is a 1968 song by American rock band Tommy James and the Shondells. Written by the duo of Tommy James and drummer Peter Lucia Jr., it was intended as a change in direction of the group's sound and composition....

by Tommy James
Tommy James
Tommy James is an American pop-rock musician, singer, songwriter, and record producer, best known as leader of the 1960s rock band Tommy James and the Shondells.-Early life and career:...

 and the Shondells was released in November 1968 and was among the first 16-track recordings.

One of the first 16-track recorders was installed at CBS Studios in New York City
New York City
New York is the most populous city in the United States and the center of the New York Metropolitan Area, one of the most populous metropolitan areas in the world. New York exerts a significant impact upon global commerce, finance, media, art, fashion, research, technology, education, and...

 where it was used to record the second album by Blood, Sweat & Tears
Blood, Sweat & Tears (album)
Blood, Sweat & Tears is the second album by the band Blood, Sweat & Tears, released in 1968. It was a huge commercial success, rising to the top of the U.S. charts for a collective seven weeks and yielding three successive Top 5 singles...

released in December 1968. The Grateful Dead
Grateful Dead
The Grateful Dead was an American rock band formed in 1965 in the San Francisco Bay Area. The band was known for its unique and eclectic style, which fused elements of rock, folk, bluegrass, blues, reggae, country, improvisational jazz, psychedelia, and space rock, and for live performances of long...

 released their first 16-track recordings Aoxomoxoa
Aoxomoxoa
Aoxomoxoa is the third studio album by the Grateful Dead. It was originally titled Earthquake Country. Many Deadheads consider this era of the Dead to be the experimental apex of the band's history. It is also the first album with Tom Constanten as an official member of the band...

in June 1969 and Live/Dead
Live/Dead
Live/Dead is the first official live album released by the San Francisco-based band Grateful Dead. It was recorded over a series of live concerts in early 1969 and released later in the year on November 10...

in November 1969. TTG Studios in Los Angeles
Los Ángeles
Los Ángeles is the capital of the province of Biobío, in the commune of the same name, in Region VIII , in the center-south of Chile. It is located between the Laja and Biobío rivers. The population is 123,445 inhabitants...

 built its own 16-track machine in 1968. This was used on Frank Zappa
Frank Zappa
Frank Vincent Zappa was an American composer, singer-songwriter, electric guitarist, record producer and film director. In a career spanning more than 30 years, Zappa wrote rock, jazz, orchestral and musique concrète works. He also directed feature-length films and music videos, and designed...

's album Hot Rats
Hot Rats
Hot Rats is the second solo album by Frank Zappa. It was released in October 1969. Five of the six songs are instrumental . It was Zappa's first recording project after the dissolution of the original Mothers of Invention...

released in October 1969. Volunteers
Volunteers (Jefferson Airplane album)
-Personnel:*Grace Slick – vocals, piano on "The Farm", "Hey Fredrick", "Eskimo Blue Day", and "Volunteers", organ on "Meadowlands", recorder on "Eskimo Blue Day"*Paul Kantner – vocals, rhythm guitar*Marty Balin – vocals, percussion...

by Jefferson Airplane
Jefferson Airplane
Jefferson Airplane was an American rock band formed in San Francisco in 1965. A pioneer of the psychedelic rock movement, Jefferson Airplane was the first band from the San Francisco scene to achieve mainstream commercial and critical success....

 was released in November 1969. The back of the Jefferson Airplane album cover includes a picture of the 16-track MM-1000.

Advision and Trident were also among the first in the U.K. to install 16-track machines. Trident installed its first 16-track machine in late 1969. "After The Flood", a song from the Van der Graaf Generator
Van der Graaf Generator
Van der Graaf Generator are an English progressive rock band, formed in 1967 in Manchester. They were the first act signed to Charisma Records. The band achieved considerable success in Italy during the 1970s...

 album The Least We Can Do Is Wave To Each Other
The Least We Can Do Is Wave To Each Other
The Least We Can Do Is Wave to Each Other is the second album by the British progressive rock band Van der Graaf Generator. It was released in 1970. The album was reissued in re-mastered form, with two bonus tracks, in 2005....

, was recorded at this studio on 16 tracks in December 1969. Production of 16-track machines boomed and the number of studios worldwide using these machines exploded during 1970 and 1971. By the end of 1971 there were at least 21 studios in London using 16-track recorders in conjunction with Dolby noise reduction. Groups using Trident at this time also included Genesis
Genesis (band)
Genesis are an English rock band that formed in 1967. The band currently comprises the longest-tenured members Tony Banks , Mike Rutherford and Phil Collins . Past members Peter Gabriel , Steve Hackett and Anthony Phillips , also played major roles in the band in its early years...

 and David Bowie
David Bowie
David Bowie is an English musician, actor, record producer and arranger. A major figure for over four decades in the world of popular music, Bowie is widely regarded as an innovator, particularly for his work in the 1970s...

 as well as Queen
Queen (band)
Queen are a British rock band formed in London in 1971, originally consisting of Freddie Mercury , Brian May , John Deacon , and Roger Taylor...

 who experimented with multitracking extensively most prominently on their albums Queen II
Queen II
Queen II is the second album by British rock group Queen, released in March 1974. It was recorded at Trident Studios, London in August 1973 with co-producers Roy Thomas Baker and Robin Cable, and engineered by Mike Stone....

 and A Night at the Opera
A Night at the Opera (Queen album)
A Night at the Opera is the fourth studio album by the British rock group Queen, released in November 1975. Co-produced by Roy Thomas Baker and Queen, A Night at the Opera was, at the time of its release, the most expensive album ever recorded...

.

Australia's first sixteen-track recorder was installed at Armstrong's Studios
Armstrong's Studios
-- also known as Bill Armstrong's Studio and later renamed AAV is an important Australian commercial recording studio located in Melbourne, Victoria....

 in Melbourne
Melbourne
Melbourne is the capital and most populous city in the state of Victoria, and the second most populous city in Australia. The Melbourne City Centre is the hub of the greater metropolitan area and the Census statistical division—of which "Melbourne" is the common name. As of June 2009, the greater...

 in 1971; Festival installed Australia's first 24-track recorder at its Sydney studio in 1974. During the 1970s, sixteen, twenty-four, and thirty-two tracks became common in professional studios, with recording tape reaching two and three inches (5.08 cm - 7.62 cm) wide. The so-called "golden age" of large format professional analog recorders would last into the 1990s when the technology was mostly replaced with digital tape machines, and later on, computer systems using hard disk drives instead of tape. Some music producers and musicians still prefer working with the sound of vintage analog recording equipment despite the additional costs and difficulties involved.

Large format analog multitrack machines can have up to 24 tracks on a tape two inches wide which is the widest analog tape that is generally available. Prototype machines, by MCI in 1978, using 3" tape for 32 tracks never went into production, though Otari made a 32 track 2" MX-80. A few studios still operate large format analog recorders, though much of the time their use is only to copy sounds onto a modern digital format. Maintaining these machines has become increasingly difficult as new parts are rarely available. New tape is still available but prices have risen significantly in recent years.

Home Multitrack Systems

In 1973 TEAC marketed their consumer 4-channel quadraphonic
Quadraphonic
Quadraphonic sound – the most widely used early term for what is now called 4.0 surround sound – uses four channels in which speakers are positioned at the four corners of the listening space, reproducing signals that are independent of one another...

 tape recorders for use as home multitrack recorders. The result were the popular TEAC 2340 and 3340 models. Both used ¼ inch tape. The 2340 ran at either 3¾ or 7½ inches per second and used 7-inch reels while the 3340 ran at 7½ or 15 inches per second and used 10½ inch reels. The 2340 was priced at under U.S. $1,000 making it very popular for home use.

The advent of the compact audio cassette (developed in 1963) ultimately led to affordable, portable four-track machines such as the Tascam
TASCAM
TASCAM is the professional audio division of TEAC Corporation, headquartered in Montebello, California. Tascam is credited as the inventor of the Portastudio, the first cassette-based multi-track home studio recorders. Tascam also introduced the first low-cost mass produced multitrack recorders...

 Portastudio
Portastudio
The TASCAM Portastudio was the world's first four track recorder based on a standard compact audio cassette tape.When the original Portastudio 144 made its debut in 1979 it was a revolutionary creative tool...

 which debuted in 1979. Cassette-based machines could not provide the same audio quality as reel-to-reel machines, but served as a useful tool for professional and semi-pro musicians in making song demos
Demo (music)
A demo version or demo of a song is one recorded for reference rather than for release. A demo is a way for a musician to approximate their ideas on tape or disc, and provide an example of those ideas to record labels, producers or other artists...

. Bruce Springsteen's
Bruce Springsteen
Bruce Frederick Joseph Springsteen , nicknamed "The Boss," is an American singer-songwriter who records and tours with the E Street Band...

 1982 album Nebraska
Nebraska (album)
-Themes:The album begins with "Nebraska", a first-person narrative based on the true story of 19-year-old spree killer Charles Starkweather and his 14-year-old girlfriend, Caril Ann Fugate, and ends with "Reason to Believe", a complex narrative that renders its title phrase into contemptuous sarcasm...

was made this way, with Springsteen choosing the album's earlier demo versions over the later studio recordings.

The familiar tape cassette was designed to accommodate four channels of audio – in a commercially recorded cassette these four tracks would normally constitute the stereo channels (each consisting of two tracks) for both 'sides' of the cassette – in a four-track cassette recorder all four tracks of a cassette are utilised together, often with the tape running at twice the normal speed (3¾ instead of 1⅞ inches per second) for increased fidelity. A separate signal can be recorded on to each of four tracks. (As such, the four-track machine does not utilise the two separate sides of the cassette in the conventional sense; if the cassette is inserted the other way round, all four tracks play in reverse.) As with professional machines, two or more tracks can be bounced down to one. When recording is complete, the volume level of each track is optimised, effects are added where desired, each track is separately 'panned' to the desired point in the stereo field and the resulting stereo signal is mixed down to a separate stereo machine (such as a conventional cassette recorder).

Computer-based Digital Recording

Modern multitrack recorders are digital and use a variety of computer-based technologies and media types. These including digital tape, hard disk, and optical disc. A highly competitive market and rapidly falling costs for this equipment has made it common to find multitrack recording technology outside a typical recording studio. For example, Apple Computer's
Apple Computer
Apple Inc. is an American multinational corporation that designs and markets consumer electronics, computer software, and personal computers. The company's best-known hardware products include the Macintosh line of computers, the iPod, the iPhone and the iPad...

 GarageBand
GarageBand
GarageBand is a software application for Mac OS X and iOS that allows users to create music or podcasts. It is developed by Apple Inc. as a part of the iLife software package on Mac OS X.-Audio recording:...

 is included in all of the company's new computers, and is used by amateur
Amateur
An amateur is generally considered a person attached to a particular pursuit, study, or science, without pay and often without formal training....

s as a cost-efficient way to downmix
Downmixing
Downmixing is a general term used for manipulating audio where a number of distinct audio channels are mixed together to produce a lower number of channels...

 music and podcast
Podcast
A podcast is a series of digital media files that are released episodically and often downloaded through web syndication...

s.
Starting around 1995, another revolution in multitracking began, with the arrival of cheap digital multitrack recorders, which recorded sound to a computer hard drive, a digital tape format (such as ADAT
ADAT
Alesis Digital Audio Tape or ADAT is a magnetic tape format used for the simultaneous digital recording of eight analog audio or digital audio tracks at once, onto a Super VHS tape that is used by consumer VCRs.- History :...

), or in some cases Minidisc
MiniDisc
The disc is permanently housed in a cartridge with a sliding door, similar to the casing of a 3.5" floppy disk. This shutter is opened automatically by a mechanism upon insertion. The audio discs can either be recordable or premastered. Recordable MiniDiscs use a magneto-optical system to record...

s. While hardware costs have fallen the power of the personal computer have increased, so that today, an average home computer is sufficiently powerful to serve as a complete multitrack recorder, using inexpensive hardware and software (under US $1,000). This is a far cry from the days when multitrack recorders cost thousands of dollars and few people could afford them.

Some of the leading providers of multitrackers are Tascam
TASCAM
TASCAM is the professional audio division of TEAC Corporation, headquartered in Montebello, California. Tascam is credited as the inventor of the Portastudio, the first cassette-based multi-track home studio recorders. Tascam also introduced the first low-cost mass produced multitrack recorders...

 (hard drive or cassette based), Alesis
Alesis
Alesis is a company based in Cumberland, Rhode Island, that designs and markets electronic musical instruments, digital audio processors, audio mixers, digital audio interfaces, recording equipment, drum machines, professional audio and electronic percussion products...

 (ADAT digital tape based), Roland
Roland Corporation
is a Japanese manufacturer of electronic musical instruments, electronic equipment and software. It was founded by Ikutaro Kakehashi in Osaka on April 18, 1972, with ¥33 million in capital. In 2005 Roland's headquarters relocated to Hamamatsu in Shizuoka Prefecture. Today it has factories in Japan,...

/Boss
Boss Corporation
Boss is a manufacturer of effects pedals for electric guitar and bass guitar. It is a division of the Roland Corporation, a Japanese manufacturer that specializes in musical equipment and accessories...

 (hard drive based), Fostex
Fostex
Fostex is a Japanese manufacturer that is one of the largest transducer and OEM speaker makers in the world, founded in July 1973 by Foster Electric Co. Ltd.-Company history:Fostex , founded in July 1973 by Foster Electric Co...

 (hard drive based), Yamaha (hard drive based), and Korg
Korg
is a Japanese multinational corporation that manufactures electronic musical instruments, audio processors and guitar pedals, recording equipment, and electronic tuners...

.
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