Paul McCartney February 1967, and the LP followed in June. McCartney's "She's Leaving Home" was an orchestral pop song. MacDonald described the track as "[among] the finest work on "Sgt. Pepper"—imperishable popular art of its time". Based on an ink drawing by McCartney, the LP's cover included a collage designed by pop artists Peter Blake and Jann Haworth, featuring the Beatles in costume as the Sgt. Pepper's Lonely Hearts Club Band, standing with a host of celebrities. The heavy moustaches worn by the Beatles reflected the growing influence of hippie style trends on the band, while their clothing "spoofed the vogue in
Sgt. Pepper's Lonely Hearts Club Band in the Life" as the "Sgt. Pepper" track that best exemplifies this approach. In his book on ambient music, "The Ambient Century: From Mahler to Moby", Mark Prendergast describes the album as the Beatles' "homage" to Stockhausen and Cage, adding that its "rich, tape-manipulated sound" shows the influence of electronic and experimental composer Pierre Schaeffer. The musician and producer Alan Parsons believes that with "Sgt. Pepper" "people then started thinking that you could spend a year making an album and they began to consider an album as a sound composition and not just a musical composition. The idea was gradually