now, i know wikipedia is an unreliable source, don't flame me; i just read that mike "contributed" music to the movie "chapter 27" and is quoted (without citation) as saying "John Lennon was a legend, and to be involved in this project is amazing" - who believes and who doesn't?
I'm downloading the movie right now, Ill check the credits and report back. Edit - Couldn't find anything in the music credits.