QUADS
Find groups of 4 bands that share something in common
The Misfits
Iwrestledabearonce
Iced Earth
Dragonforce
Arch Enemy
Saves The Day
My Chemical Romance
Bouncing Souls
Cirith Ungol
Amon Amarth
Burzum
Gorgoroth
Lacuna Coil
Helloween
Blind Guardian
In This Moment
Mistakes remaining: