List of bands (13):

From Under Concrete Kings
Frontside
Frostshock
Frozen Crown
Frozen Soul
Fugitive
Gamma Ray
Gatecreeper
Gates to Hell
Get the Shot
Gloryhammer
Godeth
Godsmack
Godsnake
Gojira
Gorgonzolla
Gotthard
Graceless
Grailknights
Grand Magus