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 as a genuine art form. Riley says that pop had been due this accreditation "at least as early as "A Hard Day's Night"" in 1964. He adds that the timing of the album's release and its reception ensured that ""Sgt. Pepper" has attained the kind of populist adoration that renowned works often assume regardless of their larger significance – it's the Beatles' 'Mona Lisa'." According to Rodriguez, an element of exaggeration accompanied some of the acclaim for "Sgt. Pepper", with particularly effusive approbation coming from Rorem, Bernstein and Tynan, "as if every critic was seeking to outdo the other for