Naturally, I wondered who cut the drum track... wouldn’t surprise me if she did. She’s a gift.
After I sent you the link, I couldn't help giving her another listen, and I also noticed that the backing tracks are original. I had the same thought you did. I'll bet she did all that work herself.
Anyone else wants to know who on earth we're talking about, here she is:
http://www.youtube.com/watch?v=3XIUcRnMoU8&feature=mfu_in_order&list=UL