Very cool. I'd actually install iTunes to get these.
The music/brain link is completely fascinating to me. Last decent book I read was Musicophilia by Oliver Sacks. The first half of the book is quite different than the second half, but both are good.
I caught the end of the interview with Gabby Giffords within the last week. Her speech patterns are coming along, but most of her sentences are single words. The words are an interesting amalgamation of the thoughts of the sentence she is trying to say. Near the end of the interview, though, there is a scene with one of her therapists playing guitar and Gabby singing along, knowing all the words, and able to phrase the song correctly. The power of music is deep in the brain, no doubt. Fascinating.