I heard about this on the Destructoid podcast, it's really very interesting. I had thought before about having metrics on everything thing I did (like the way last.fm tracks the music I listen to) and now it seems that this is the way things could be going. However after watching Jesse's presentation it could be much more invasive and worrying than I had thought.
" ...um, there are TWO guitarists in The Beatles. Paul McCartney played bass. *EDIT* Understand the question now. Well, put it this way: Metallica has two guitarists as well. It's about the best combo, like dams said. Unfortunately, it ended up making "Orion" play like crap because you didn't get to play half of the solo. "
Sorry, I know this is The Beatles forum but...in Orion, if we are thinking about the same solo, you don't play the second half because it's played on bass.