John Lennon's third take of "It's Not Too Bad" (the original title of "Strawberry Fields Forever") is the first instance of what would ultimately evolve into the chorus. But at this early point, it merely consists of a chord progression - no lyrics or melody. That progression features similarities to the chord progression Lennon used a year previously in "In My Life". The graphic below illustrates these similarities. (Click to enlarge.)
This blog is a workshop for developing my analyses of The Beatles' music.