Early heavy metal must haves-

Iron maiden (number of the beast, piece of mind)
Judas Priest (stained class)
Black Sabbath (Sabbath Bloody Sabbath "ozzy")
Black Sabbath ( Heaven and Hell "dio")
AC/DC (Back in Black, Hiway to hell)

80's "hair" metal

Gun's n Roses (use your illusion)
Skid Row
Motley crue (dr. feelgood)
Lynchmob (wicked sensation)
Def leppard (hysteria)
Van Halen (women and children first, 1984)

Category unknown (maybe pop?)

Billy idol (rebel yell)
Rush ( power windows, force ten)
Night ranger
Van Halen (5150)

Classic

Stevie ray Vaughn (couldn’t stand the weather)
Led Zepplin (1,2,4)
Jimi Hendrix (purple haze)
Rolling stones (too many too mention)

Live

Judas priest unleashed in the east
Roger waters
Kiss Alive
SRV
Rush (exit stage left)

Newer

Billy Idol (devil’s playground)
Queens of the stoneage
Audioslave
Velvet revolver
Greenday (American idiot)

Alternative

Alice in chains
Pearl jam (ten)
Soundgarden (badmotorfinger, superunknown)
Stone temple pilots