It has been suggested that Purdie dubbed over Pete Best's drumming on some of the pre-Ringo stuff for a quickie ripoff release and not being a Beatles fanatic wasn't really clear on what he was playing—to him, at the time, it was just another gig. Later, he mentioned it (originally to Max Weinberg, I think), and the ensuing controversy seemed to take him by surprise, but he never backed down or clarified (probably because he still doesn't know which of the 100,000 sessions it was).I remember reading interview with Purdie in Modern Drummer magazine probably late 80s where he said he played over Ringo's drumming. That's not possible because they were use 2 track recordings back then.