Sgt. Pepper's Lonely Hearts Club Band album carried on the childhood and Liverpool theme with its circus and fairground effects, its pervading atmosphere of the traditional northern music hall that was in both its main creators' [McCartney and Lennon's] blood." "Sgt. Pepper" album cover was designed by the pop artists Peter Blake and Jann Haworth. Blake recalled of the concept: "I offered the idea that if they had just played a concert in the park, the cover could be a photograph of the group just after the concert with the crowd who had just watched the concert, watching them. If we did this by using cardboard
Sgt. Pepper's Lonely Hearts Club Band the Beatles' "Rubber Soul" album. McCartney said he was highly impressed with the songs' "harmonic structures" and the choice of instruments used in Wilson's musical arrangements, and that these elements encouraged him to think the Beatles could "get further out" than the Beach Boys had. He added: "we were inspired by it and nicked a few ideas." According to author Kenneth Womack, the Beach Boys' subsequent release, the "Good Vibrations" single, was viewed by the Beatles and Martin as "a direct challenge" to their supremacy. McCartney identified "Pet Sounds" as his main musical inspiration for "Sgt. Pepper", although he said