By the time we made "Abbey Road", John and I were openly critical of each other's music, and I felt John wasn't much interested in performing anything he hadn't written himself.
Paul McCartneyWhen I sit down to write a song, it's a kind of improvisation, but I formalize it a bit to get it into the studio, and when I step up to a microphone, I have a vague idea of what I'm about to do.
Paul McCartney