Trouble

Off the top of my head, I can't think of a more influential band that got none of the attention they deserved than the one and only Trouble. In the American scene, Trouble is as much a part of the foundation of heavy metal as any other band. Their first two albums laid the blueprint for doom on this side of the pond, while their self-titled reinvention not only served as a cornerstone for all the groove and stoner metal that followed, but it stands as one of the truly great heavy metal albums ever made. No band has ever made guitars sound heavier than Trouble.