Satriani Frank Zappa John Petrucci Alcatrazz Orianthi David Lee Roth Whitesnake Dream Theater Travis Barker Eddie Van Halen Ozzy Osbourne Zappa plays Zappa Billy Sheehan G3 Bad4Good Incubus Devin Townsend , Website www.vai.com Notable instruments Ibanez JEM Ibanez Universe Tom Anderson Drop Top Classic Steven Siro Vai (born June 6, 1960)