As time went on, Paul McCartney and John Lennon became very different songwriters, leading to Lennon being "not interested" in one McCartney song.

I tried to get away from our dark political reality with Dylan and ‘yacht rock’ and more—but music movies couldn’t shield me ...

Among the many big names that passed though Hollywood's A&M Studios, three massive stars of the early 1970s all cut respective seminal work simultaneously.