Some bits:
1) Paul Superapple songs were re-recorded by Bruce Honsby and the Range during their heyday. Full studio production...
2) PLEASE stop the Bernard Purdie stories: He ONLY played on the AMerican "German EP" reissue (Tony Sheridan Beatles sessions) to add punch to the drums (which were Pete Best). The American issue has louder drums over the same mix.
These were released AFTER the Beatles hit America, and Purdie only knew it was "The Beatles" and sounded like them because it WAS them. He didn't know songs, only when it was done, which was during their "first albums" era. He exaggerated about how much he did.
3) Speaking of Purdie - just today I got my copy of one of my favorite sessions - mixing the complete "Aretha Franklin/King Curtis: Live at the Fillmore" set that is coming out. I was assigned to mix the complete sets of three nights for them, one of the hardest challenges I've faced, but it really came out well. Bernard Purdie is the drummer, and his feel is loose and wild but makes the show run, when others are wingin it... (Check it out when it's released - Billy Preston, Jerry Jemmott, King Curtis, etc. A KILLER backup band...)