Michael Kiske (Helloween, Place Vendome, Kiske/Somerville, Unisonic)
Kai Hansen (Helloween, Gamma Ray)
Sharon den Adel (Within Temptation)
Bob Catley (Magnum, ex-Hard Rain)
Timo Tolkki (ex-Stratovarius, ex-Revolution Renaissance, ex-Symfonia)
Jørn Lande (ex-Ark, ex-Masterplan, Jørn)
Klaus Meine (Scorpions)
Alice Cooper
Roy Khan (Conception, ex-Kamelot)
Amanda Somerville (Aina, Kiske/Somerville, Trillium)
Eric Singer (Kiss, ex-Black Sabbath, ex-Alice Cooper)
Russell Allen (Symphony X, Adrenaline Mob)
Tim "Ripper" Owens (ex-Judas Priest, ex-Yngwie Malmsteen, ex-Iced Earth)
Jon Oliva (Savatage, Jon Oliva's Pain)
Joe Lynn Turner (ex-Rainbow, ex-Deep Purple, ex-Yngwie Malmsteen)
Biff Byford (Saxon)
Ronnie Atkins (Pretty Maids)
Eric Martin (Mr. Big)
Robert Mason (Warrant, Lynch Mob)
Dee Snider (Twisted Sister)
Herbie Langhans (Seventh Avenue)
Marko Hietala (Nightwish, Tarot, Northern Kings, Raskasta Joulua, Sapattivuosi, Sinergy)
Geoff Tate (Operation: Mindcrime, ex-Queensrÿche)
Candice Night (Blackmore's Night)
Hansi Kursch (Blind Guardian)
Mille Petrozza (Kreator)
Floor Jansen (Nightwish, ex-After Forever)
Ralf Scheepers (Primal Fear, ex-Gamma Ray)
En wat is er mis met Klaus Meine? Niet goed of bekend genoeg..??