All singing, all dancing is an idiom

Idiom

Idiom is an expression, word, or phrase that has a figurative meaning that is comprehended in regard to a common use of that expression that is separate from the literal meaning or definition of the words of which it is made...

 meaning "full of vitality", or, more recently, "full-featured". It originated with advertisements for the 1929 musical film The Broadway Melody

The Broadway Melody

The Broadway Melody is a 1929 American musical film and the first sound film to win an Academy Award for Best Picture. It was one of the first musicals to feature a Technicolor sequence, which sparked the trend of color being used in a flurry of musicals that would hit the screens in 1929-1930...

, which proclaimed the film to be "All talking all singing all dancing".

Recently, the idiom has come to be used to describe high tech

High tech

High tech is technology that is at the cutting edge: the most advanced technology currently available. It is often used in reference to micro-electronics, rather than other technologies. The adjective form is hyphenated: high-tech or high-technology...

 gadgetry such as smartphone

Smartphone

A smartphone is a high-end mobile phone built on a mobile computing platform, with more advanced computing ability and connectivity than a contemporary feature phone. The first smartphones were devices that mainly combined the functions of a personal digital assistant and a mobile phone or camera...

s, indicating that the product is very advanced, or has an abundance of features. For example, from a 1995 article in The Daily Telegraph

The Daily Telegraph

The Daily Telegraph is a daily morning broadsheet newspaper distributed throughout the United Kingdom and internationally. The newspaper was founded by Arthur B...

:
"All Singing, All Dancing

All Singing, All Dancing

"All Singing, All Dancing" is the eleventh episode of The Simpsons ninth season and originally aired on the Fox network on January 4, 1998. In it, the fourth clip show aired by The Simpsons, Homer claims he hates singing, so Marge shows family videos of musical numbers from the previous seasons...

" is the title of a ninth season

The Simpsons (season 9)

The Simpsons ninth season originally aired between September 1997 and May 1998, beginning on Sunday, September 21, 1997 with "The City of New York vs. Homer Simpson". The show runner for the ninth production season was Mike Scully...

 episode of the animated television show The Simpsons

The Simpsons

The Simpsons is an American animated sitcom created by Matt Groening for the Fox Broadcasting Company. The series is a satirical parody of a middle class American lifestyle epitomized by its family of the same name, which consists of Homer, Marge, Bart, Lisa and Maggie...

.

The phrase is also used in the film Fight Club, as in "I am the all singing, all dancing crap of the world."