It's not so hard , even Jason Becker don't play it as fast as the original violin tempo ... If you tried it at the original tempo , it will be hard !

You can find it at http://www.olga.net or http://www.mysongbook.com ... It's transposed to the E scale instead of A , Vai's short version in crossroad's movie is in A scale like the original version ... Search for Vai crossroad's guitar duel too.