The Beatles (album) stereo only. In the UK, the following album, "Yellow Submarine", was the last to be shipped in mono. The mono version of "The Beatles" was made available worldwide on 9 September 2009, as part of "The Beatles in Mono" CD boxed set. A reissue of the original mono LP was released worldwide in September 2014. The album's sleeve was designed by pop artist Richard Hamilton, in collaboration with McCartney. Hamilton's design was in stark contrast to Peter Blake's vivid cover art for "Sgt. Pepper's Lonely Hearts Club Band", and consisted of a plain white sleeve. The band's name, in Helvetica,
Sgt. Pepper's Lonely Hearts Club Band The group's friend and former press agent, Derek Taylor, remembered that residents of the neighbourhood opened their windows and listened without complaint to what they understood to be unreleased Beatles music. "Sgt. Pepper", according to American musicologist Allan F. Moore, is composed mainly of rock and pop music, while Michael Hannan and Naphtali Wagner both believed it is an album of various genres; Hannan said it features "a broad variety of musical and theatrical genres". According to Hannan and Wagner, the music incorporates the stylistic influences of rock and roll, vaudeville, big band, piano jazz, blues, chamber, circus, music hall,