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
Album era "A Christmas Gift for You from Phil Spector" (1963), the Beatles' "Rubber Soul" (1965), the Beach Boys' "Pet Sounds" (1966), the Mothers of Invention's "Freak Out!" (1966), and the Beatles' "Sgt. Pepper's Lonely Hearts Club Band" (1967). In reference to the Beatles' "Rubber Soul", "Revolver" (1966) and "Sgt. Pepper" and the Beach Boys' "Pet Sounds", writer Bill Martin noted: "In the wake of these albums, many rock musicians took up the 'complete album approach.'" "Rolling Stone" assistant editor Andy Greene felt that "Sgt. Pepper's" "was the beginning of the album era. It was the big bang of albums." According to