Sgt. Pepper's Lonely Hearts Club Band "Being for the Benefit of Mr. Kite!" and "A Day in the Life". Producer George Martin and engineer Geoff Emerick helped realise the group's ideas by approaching the studio as an instrument, applying orchestral overdubs, sound effects and other methods of tape manipulation. Recording was completed on 21 April 1967. The cover, depicting the Beatles posing in front of a tableau of celebrities and historical figures, was designed by the British pop artists Peter Blake and Jann Haworth. "Sgt. Pepper" is regarded by musicologists as an early concept album that advanced the use of extended form in popular music while
The Beatles (album) the Byrds. Edwin Faust of "Stylus Magazine" described "The Beatles" as "foremost an album about musical purity (as the album cover and title suggest). Whereas on prior Beatles albums, the band was getting into the habit of mixing several musical genres into a single song, on "The White Album" every song is faithful to its selected genre. The rock n' roll tracks are purely rock n' roll; the folk songs are purely folk; the surreal pop numbers are purely surreal pop; and the experimental piece is purely experimental." The only western instrument available to the group during their Indian visit