Steve Vai – guitars
Mohini Dey – bass (1)
Jeremy Colson – drums (2, 7)
Alvin Chea – backing vocals (3, 6–8, 10–13)
Antonio Sol – backing vocals (3, 6–8, 10–13)
Fletcher Sheridan – backing vocals (3, 6–8, 10–13)
Mandy Vajar – backing vocals (3, 6–8, 10–13)
Nayanna Holley – backing vocals (3, 6–8, 10–13)
Stu Hamm – bass (3–6, 9–13)
Chris Frazier – drums (3–6, 9–13)
Devin Townsend – vocals (4)
Philip Bynoe – bass (7–8)
Mike Mangini – drums (8)
Mike Keneally – keyboards (8)
Dave Weiner – sitar (8)
Tommy Mars – keyboards* (11–13)
Jazz James – vocals (11–13)
Greg Wurth – "performer" (5)
Marpran Cassiopeia Vai – "performer" (11–13)