Its been awhile since I've seen it but Spinal Tap was making fun of a lot of bands like that, its part of their fictional band's backstory. They start out much

Its been awhile since I've seen it but Spinal Tap was making fun of a lot of bands like that, its part of their fictional band's backstory. They start out much like the Stones with some simple catchy early 60's tunes, turn into a hippie band, then quickly transform into metal in order to follow the money.