Professional ratings
Retrospective reviews
Review scores
Source	Rating
AllMusic
The A.V. Club	A+
The Daily Telegraph
Encyclopedia of Popular Music
MusicHound Rock	5/5
Paste	100/100
Pitchfork	10/10
The Rolling Stone Album Guide
Sputnikmusic	5/5
The Village Voice	A

Sgt. Pepper's Lonely Hearts Club Band is the eighth studio album by the English rock band the Beatles. Released on 1 June 1967, it was an immediate commercial and critical success, spending 27 weeks at the top of the albums chart in the United Kingdom and 15 weeks at number one in the United States. Time magazine declared it "a historic departure in the progress of music" and the New Statesman praised its elevation of pop to the level of fine art. It won four Grammy Awards in 1968, including Album of the Year, the first rock LP to receive this honour.

In August 1966, the Beatles permanently retired from touring and began a three-month holiday from recording. During a return flight to London in November, Paul McCartney had an idea for a song involving an Edwardian era military band that would eventually form the impetus of the Sgt. Pepper concept. Sessions for what was to become the Beatles' eighth studio album began on 24 November in Abbey Road Studio Two with two compositions inspired from their youth, "Strawberry Fields Forever" and "Penny Lane", but after pressure from EMI, the songs were released as a double A-side single and were not included on the album.

In February 1967, after recording the "Sgt. Pepper's Lonely Hearts Club Band" song, McCartney suggested that the Beatles should release an entire album that would represent a performance by the fictional Sgt. Pepper band. This alter ego group would give them the freedom to experiment musically. During the recording sessions, the band endeavoured to improve upon the production quality of their prior releases. Knowing they would not have to perform the tracks live, they adopted an experimental approach to composition, writing songs such as "With a Little Help from My Friends", "Lucy in the Sky with Diamonds" and "A Day in the Life". Producer George Martin and engineer Geoff Emerick's innovative recording of the album included the liberal application of sound shaping signal processing and the use of a 40-piece orchestra performing aleatoric crescendos. Recording was completed on 21 April 1967. The cover, depicting the band posing in front of a tableau of celebrities and historical figures, was designed by the British pop artists Peter Blake and Jann Haworth.

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