Steve Vai Style Lick
Here we've got a Steve Vai style lick based in E Minor but using notes from C Lydian and A Dorian. This is one of Vai's more blistering licks that can utilize a number of techniques. For the first bar of the lick I like to use a sweep/economy motion with my picking hand while my left hand is just doing hammer on's and pull off's. You could do that or do the alternate picking approach which I have seen Steve do many times as well. For th second bar of the lick I use a combination of legato and picking. You could do that or alternate picking. And the third and final bar we end with a full bend on the 20th fret. If you want to add more "Vai" mojo to that bend, just abuse your whammy bar while bending. But keep it in tune of course.