List of bands (14):

Gojira
Gorgonzolla
Gorod
Gotthard
Graceless
Grailknights
Grand Magus
Grave Digger
Green Carnation
Green Day
Green Lung
Grey Daze
Gruesome
Guilt Trip
Guilt Trip
Guns N'Roses
Gunshine
Gus G
Gutter Creek
Haken