Ronnie James Dio (Black Sabbath, Dio, Rainbow), King Diamond (Mercyful Fate, King Diamond), Blackie Lawless (W.A.S.P.), Alice Cooper, Rob Halford (Judas Priest), Bruce Dickinson (Iron Maiden), Ozzy Osbourne (Black Sabbath, Ozzy Osbourne), Ian Gillan (Deep Purple, Black Sabbath), Geoff Tate (Queensryche), Doro Pesch (Warlock), Phil Lynott (Thin Lizzy), Jon Oliva (Savatage), Roger Waters/David Gilmour (Pink Floyd), Eric Bloom/Buck Dharma (Blue Oyster Cult), David Coverdale/Glenn Hughes (Deep Purple), Vince Neil (Motley Crue), David Lee Roth/Michael Anthony (Van Halen), David Byron (Uriah Heep), Phillip Anselmo (Down, Pantera), Axl Rose (Guns N Roses), Robert Plant (Led Zeppelin) I could go on and on
