This is a cool reference for Beatles’ fans:
In 1989 the American musicologist Alan W. Pollack started to analyze the songs of the Beatles. He published his first results on internet. In 1991 — after he had finished the work on 28 songs — he bravely decided to do the whole lot of them. About ten years later, in 2000 he completed the analysis of the official Beatles’ canon, consisting of 187 songs and 25 covers.
Here’s an example from Rocky Raccoon:
Compositionally, the song is a clever triumph of formal articulation over rote monothematicism by virtue of controlled, subtle variation in a number of departments. That’s an excessively highfalutin way of saying, gee, the whole three and a half minute track is played out over the same unvarying eight-bar chord progression, and yet, rather than sounding painfully monotonous, it creates the impression of a something developed with the full formal scale and variety you typically expect from a "song"!
(via J-Walk Blog)