I learned it years ago when in classical guitar lessons, actually I learned the 5th 9th and 24th. And a bit of the 7th and 10th. They're great violin pieces, and some good on guitar too (I recommend the elliot fisk version, he shreds them up completely).

In the movie, Ralph Macchio's part isn't recorded by Steve Vai I believe. I have guitar magazines at the time that mention some student at berklee that did it. I want to say it was an indian guy..

Its a fun piece though, when I play it on electric I usually play it around 150-160 bpm..what really amazes me is Joe stump who can play it at 180. Also Eliot Fisk that I mentioned earlier, plays it at over 200. Of course, he has 5 "picks" at his disposal, but still..