OLDROKERENDER
Winger
I'm sure I read an interview with McCartney saying that him and Lennon were really into some of the avant garde classical stuff at the time.
I tried listening to some Stockhausen years ago and found it completely f***ing weird. Might try again at some point to see if I still think the same now.
Lennon was also heavily influenced by the American experimental composer John Cage. Revolution 9 is certainly a nod towards some of Cage's work.