Wow!This is a smart crowd here (I finally found one).
See what I mean? When Tommy was their drummer, they didn't call themselves Beatles yet.
billy preston played A LOT more music w/ the beatles and was a lot more influential than a few of these other guys.
Billy gave Let It Be a lot of its flavour..
What about Yoko? Oh wait, she would have been a studio musician.
she was under the heading of Karma (both good & bad)
And instant.
No, Billy Shears was on Sgt. Pepper's!