Conversation so far:
Does Medley refer to a song on The Beatles' album Abbey Road?
Medley refers to side two of Abbey Road, which contains a 16-minute medley of eight short songs.
Were the 8 songs on side two of The Beatles' Abbey Road album previously recorded or new?
The eight short songs were recorded over July and August and blended into a suite by McCartney and Martin.

Question: Did anyone besides McCartney and Martin have a hand in creating the song?
Self-contained rewrite: Did anyone besides Paul McCartney and George Martin have a hand in creating the song?