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 record, unique, clever, and stunning". In "The Times", William Mann described "Sgt. Pepper" as a "pop music master-class" and wrote admiringly of its use of "vivid" bass lines that partly recalled the Alberti tradition in classical music. He also commented that, so considerable were the album's musical advances, "the only track that would have been conceivable in pop songs five years ago" was "With a Little Help from My Friends". Having been among the first British critics to fully appreciate "Revolver", Peter Clayton of "Gramophone" magazine said that the new album was "like nearly everything the Beatles do, bizarre, wonderful,