“I was always one of those guys who was a seeker after truth,” Steve Vai says. “I want to know what’s going on.” True enough. Vai’s relentless quest “to know what’s going on” has enabled him to plumb the transductive, vibratory mysteries of the electric guitar and come up with tonalities and techniques never before imagined. His place of honor in guitar history is secure. After all, of all the guitarists who emerged in the Eighties shred scene, Vai is quite arguably the most innovative.