Among the other artists to perform were Ozzy Osbourne guitarist Gus G, bassist Rudy Sarzo, Iron Maiden drummer Nicko McBrain—and singer Sebastian Bach.
Below, you can check out some decent-quality, fan-shot footage of Vai and Bach teaming up to play Rush's "Tom Sawyer."
IMPORTANT: Vai doesn't appear in the clip until 5:40, and "Tom Sawyer" starts at 6:47.
As we reported last week, Vai will hit the road with Malmsteen, Zakk Wylde, Nuno Bettencourt and Tosin Abasi for the Generation Axe tour, which will kick off April 5 in Seattle. For more anout that, head here.
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