Artistically, John Lennon is often credited as being the most avant garde of the Beatles. Indeed, his involvement with Yoko Ono and their subsequent collaborations (Two Virgins, “Revolution 9,” and numerous experimental films) support that conclusion. Paul McCartney affirmed his early interest in the 1960s art movement through supporting the Indica Gallery and his interest in noise music pioneers such as Karlheinz Stockhausen.
However, George Harrison also dabbled in experimental music, such as his 1969 album Electronic Sound. In his 1987 interview with the late Billboard editor-in-chief Timothy White, Harrison claimed that the album was “a load of rubbish” and added “the word avant-garde, as my friend Alvin Lee likes to say, really means, ‘Aven’t-got a clue!’ So, whatever came out when I fiddled with the knobs went on tape — but some amazing sounds did happen.”
Source: by Kit O'Toole/somethingelsereviews.com