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
Progressive pop Beatles and the Yardbirds. In December 1966, "Melody Maker" attempted to define the recent developments in pop. In this article, titled "Progressive Pop", Chris Welch categorised artists using terms previously associated with jazz; in the most advanced of these, "Avant-Garde", he placed the Beatles, Cream, Love, the Mothers of Invention, Pink Floyd and Soft Machine, while "Modern", the next category, comprised the Byrds, Donovan and the Small Faces. After the release of the Beatles' 1967 album "Sgt. Pepper's Lonely Hearts Club Band", magazines such as "Melody Maker" drew a sharp line between "pop" and "rock', thus eliminating the "roll" from