Quoted from Trekkie1978:None of their solo songs will make it into the game.
Just look at The Beatles Rock Band. At the time of the release, it was asked if any of the members solo work would be included or added in to the game, they couldn't due to licensing. This is a product that sold millions of copies, to where the pinball machine will be no more than a few thousand units.
Yeah - I am just pointing out that it was also recorded when he was a Beatle, years before his solo album, and Paul and John rejected it. That is the version on the Beatles Anthology. So it was on a Beatles Album, which is why someone would have it on a list of Beatles songs.