Alot of great bands came in the 70s including black sabbath, lynyrd skynyrd, and bad company. All three bands are iconic rock bands. Black sabbath are the reasons we have so many sub genres of metal like black and death metal, lynyrd skynyrd made southern rock a very likable genre and bad company were just great all around. no matter how old their music gets i will always listen to these three bands. and thats the thing regardless of how old their music is people are still buying it to this day including alot of younger kids. especially withe black sabbath. people still rebel with that sort of music and because its almost described as satanic thats makes some people like it more. alot of new bands still use these three bands as influences, even if their not even nowhere near that style of music. just goes to show you that their music gets around.