The Beatles and The Beach Boys were rivals in the 1960s, but their competitive nature often led to the bands directly influencing each other1967’ Sgt. Pepper’s Lonely Hearts Club Band is still The Beatles’ best-selling album. It was also their most experimental, as the band took on new personalities and dived deep into rock psychedelia. While the album saw the band at their highest peak creatively, it owes a lot to another project. According to producer Giles Martin, son of Beatles’ producer George Martin, Sgt. Pepper’s would not have happened without an album from The Beach Boys.
Source: Ross Tanenbaum/cheatsheet.com