Mark Tremonti (Creed, Alter Bridge)

Andy Biersack (Black Veil Brides)

Tech N9ne

Zacky Vengeance (Avenged Sevenfold)

John Cooper (Skillet)

Wolfgang Van Halen

Rory Rodriguez (Dayseeker)

Josey Scott (Ex-Saliva)

Dustin Bates (Starset)

Will Ramos (Lorna Shore)

Zakk Wylde (Ozzy Osbourne, Pantera)

Pete Loeffler (Chevelle)

Donnie Radke (Falling In Reverse)

Chad Gray (Mudvayne)

Spencer Chamberlain (Underoath)

Five Finger Death Punch

Jesse Leach (Killswitch Engage)

M. Shadows (Avenged Sevenfold)

Morgan Rose (Sevendust)

Three Days Grace