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"Revolution 9" is a sound collage from the Beatles' 1968 self-titled double album. The composition, credited to Lennon–McCartney, was created primarily by John Lennon with assistance from Yoko Ono and George Harrison. Lennon said he was trying to paint a picture of a revolution using sound. [Wikipedia]
Revolution 9 is a song by The Beatles, written by Lennon–Harrison–Ono and led on vocal by spoken/montage. Tape-loop and spoken-word collage; longest official Beatles track and the most divisive. The most experimental piece on the White Album, Revolution 9 continued Lennon's exploration of avant-garde sound effects and musical montage initiated with Carnival of Light in 1967. This soundscape composition compiled hundreds of audio snippets, sound effects, and vocal fragments layered across multiple tape generations. Lennon's interest in electronic music and dadaist artistic approaches found full expression in this nine-minute collage. (That version, renamed 'Revolution I, was included on the album, and with the single Kozinn 1995, p.180)
The session work falls within the band's The White Album (1968) period, recorded 30 May 1968 at EMI Studios. George Martin (with Chris Thomas covering) produced; Ken Scott (early) and Geoff Emerick engineered. Recorded piecemeal during 1968 sessions, Revolution 9 was constructed from collected sound effects, orchestral fragments, and vocal loops edited and assembled through multiple tape reductions. John Lennon compiled and organized the sound effects during sessions while George and Ringo were absent from Abbey Road in June 1968. The composition required unprecedented patience and creative editing.