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
Revolver (Beatles album) everything Sgt Pepper did, except it did it first and often better. It just wasn’t as well-packaged and marketed." Rodriguez writes that, whereas most contemporary acts shy away from attempting a concept album in the vein of "Sgt. Pepper", the prototype established by "Revolver", whereby an album serves as an "eclectic collection of diverse songs", continues to influence modern popular music. He characterises "Revolver" as "the Beatles' artistic high-water mark" and notes that, unlike "Sgt. Pepper", it was the product of a collaborative effort, with "the group as a whole being fully vested in creating Beatle music". "Revolver" has appeared