Jam Underground also known as JAMU, is an American rock

Rock music

Rock music is a genre of popular music that developed during and after the 1960s, particularly in the United Kingdom and the United States. It has its roots in 1940s and 1950s rock and roll, itself heavily influenced by rhythm and blues and country music...

 band noted for its musical improvisation

Musical improvisation

Musical improvisation is the creative activity of immediate musical composition, which combines performance with communication of emotions and instrumental technique as well as spontaneous response to other musicians...

, extended jams

Jams

Jams is a line of clothing produced by Jams World. Jams shorts, a popular clothing item in the 1960s and 1980s, were closely associated with the surf scenes in California and Hawaii.-History:...

, and merging of discrete music genres.
Their music blends elements of a wide variety of genres, including rock

Rock music

Rock music is a genre of popular music that developed during and after the 1960s, particularly in the United Kingdom and the United States. It has its roots in 1940s and 1950s rock and roll, itself heavily influenced by rhythm and blues and country music...

, jazz

Jazz

Jazz is a musical style that originated at the beginning of the 20th century in African American communities in the Southern United States. It was born out of a mix of African and European music traditions. From its early development until the present, jazz has incorporated music from 19th and 20th...

, funk

Funk

Funk is a music genre that originated in the mid-late 1960s when African American musicians blended soul music, jazz and R&B into a rhythmic, danceable new form of music. Funk de-emphasizes melody and harmony and brings a strong rhythmic groove of electric bass and drums to the foreground...

, hip hop

Hip hop

Hip hop is a form of musical expression and artistic culture that originated in African-American and Latino communities during the 1970s in New York City, specifically the Bronx. DJ Afrika Bambaataa outlined the four pillars of hip hop culture: MCing, DJing, breaking and graffiti writing...

, world

World

World is a common name for the whole of human civilization, specifically human experience, history, or the human condition in general, worldwide, i.e. anywhere on Earth....

, electronic

Electronic music

Electronic music is music that employs electronic musical instruments and electronic music technology in its production. In general a distinction can be made between sound produced using electromechanical means and that produced using electronic technology. Examples of electromechanical sound...

, ambient

Ambient music

Ambient music is a musical genre that focuses largely on the timbral characteristics of sounds, often organized or performed to evoke an "atmospheric", "visual" or "unobtrusive" quality.- History :...

, and classical

Classical music

Classical music is the art music produced in, or rooted in, the traditions of Western liturgical and secular music, encompassing a broad period from roughly the 11th century to present times...

. Each of their concerts is original in terms of improvised textures, modes, lyrics and multiple guest artists.

Jam Underground is based around the core band members; Chuck Hammer

Chuck Hammer

Chuck Hammer is an American guitarist and Emmy nominated digital film composer, known for seminal guitar-synth with Lou Reed, David Bowie, and Guitarchitecture....

, guitar; Mark Grasso, drums; and John Bates, bass.