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Adaptations, tributes and anniversary projects

The Sgt. Pepper mythology was reimagined for the plot of Yellow Submarine. In the animated film, the Beatles travel to Pepperland and rescue Sgt. Pepper's band from evildoers, the Blue Meanies. The album inspired the 1974 off-Broadway musical Sgt. Pepper's Lonely Hearts Club Band on the Road, directed by Tom O'Horgan, and the 1978 film Sgt. Pepper's Lonely Hearts Club Band, produced by Robert Stigwood. In July 2012, athletes donned Sgt. Pepper uniforms to pay tribute to the Beatles' album during the opening ceremony of the London Olympics.

Sgt. Pepper has been the subject of many tribute albums, including a multi-artist CD available with the March 2007 issue of Mojo and a 2009 live album, Sgt. Pepper Live, by Cheap Trick. Other tribute recordings include Sgt. Pepper Knew My Father, a multi-artist charity compilation released by the NME in 1988; Big Daddy 's 1992 album Sgt. Pepper's, which Moore recognises as "the most audacious" of all the interpretations of the Beatles' LP up to 1997; and the Flaming Lips' With a Little Help from My Fwends, released in 2014. BBC Radio 2 broadcast Sgt. Pepper's 40th Anniversary in June 2007. The programme contained new versions of the songs by artists such as Oasis, the Killers and Kaiser Chiefs, produced by Emerick using EMI's original four-track recording equipment.

The 1987 CD release attracted considerable media interest and coincided with a Granada TV documentary, It Was Twenty Years Ago Today, that located the album at the centre of the Summer of Love. The reissue peaked at number three on the UK Albums Chart and topped Billboard ' s CDs chart. The album's 25th anniversary was observed with The South Bank Show ' s presentation of Martin's TV documentary The Making of Sgt. Pepper, which included interviews with the three surviving Beatles. Although there was no official campaign for the 30th anniversary, BBC Radio 2 broadcast Pepper Forever in the UK and some 12,000 schools across the US listened to a radio special dedicated to the album on 2 June 1997. Aside from Radio 2's June 2007 project, the 40th anniversary was marked by the University of Leeds hosting a meeting of British and American commentators to debate the extent of the album's social and cultural impact.

On 26 May 2017, Sgt. Pepper's Lonely Hearts Club Band was reissued for the album's 50th anniversary as a six-disc box set. The first CD contains a new stereo remix of the album, created by Giles Martin using first-generation tapes rather than their subsequent mixdowns. Apple Corps produced the TV documentary Sgt. Pepper's Musical Revolution to commemorate the anniversary, which was also celebrated with posters, billboards and other decorations in cities around the world. In Liverpool, the anniversary was the focus of a three-week cultural festival that included events dedicated to each of the album's thirteen songs. As part of the festival, Mark Morris choreographed Pepperland to four of the songs from Sgt. Pepper and "Penny Lane", arranged by Ethan Iverson, plus six original compositions by Iverson, and a dawn-to-dusk celebration of Indian music was held in recognition of Harrison's absorption in the genre. The 50th anniversary edition of Sgt. Pepper topped the UK Albums Chart.