List of bands (15):

Guns N'Roses
Gunshine
Gus G
Gutter Creek
Haken
Halestorm
Halocene
Hammerfall
Hariot
Harlott
Hatebreed
Hatriot
Haunt
Havok
Hazzerd
Heathen
Heaven Shall Burn
Heidevolk
Helloween
Heriot