I would start with my favorite Heavy Hitters;
-Deep Purple, Led Zeppelin, Black Sabbath, Budgie, Scorpions, Thin Lizzy, Rainbow, Whitesnake, UFO, Van Halen,
-Iron Maiden, Judas Priest, Motörhead, Slayer, Metallica, Saxon, Testament, Overkill, W.A.S.P, Manowar, Mercyful Fate,
Helloween, Dio, Accept, Riot, Samson, Megadeth, Def Leppard, U.D.O, Ozzy Osbourne, Bruce Dickinson, Halford,
-Amorphis, Arch Enemy, Cradle Of Filth, Immortal, Opeth, Hypocrisy, Dark Tranquillity, Blind Guardian, Dimm Borgir,
Iced Earth, Kreator, Vintersea, Fires In The Distance, Berzerker Legion, Amon Amarth, Death Angel, Insomnium,
In Mourning, Soilwork, At The Gates, Shylmagoghnar, Emperor, Lake Of Tears, Scar Symmetry, Dissection,
Necrophobic, KK's Priest, Keep Of Kalessin, In Flames,
Non metal influential bands;
-Pink Floyd, Rush, King Crimson,
