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
1 (Beatles album) in over 35 countries, achieving the record for the album debuting at the top of the most national charts ever. It became the highest-selling of 2000 and, some time later, of the entire decade. This achievement made the Beatles the first and only artist to have the best-selling albums of two different decades. They also had the best-selling album of the 1960s, "Sgt. Pepper's Lonely Hearts Club Band". No tracks from "Sgt. Pepper" appear on this album. With this album, the Beatles also achieved having an album hit the number 1 position in the US in four non-consecutive decades (1960s,