All that stuff about heavy metal and hard rock, I don't subscribe to any of that. It's all just music. I mean, the heavy metal from the '70s sounds nothing like the stuff from the '80s, and that sounds nothing like the stuff from the '90s. Who's to say what is and isn't a certain type of music?
Back then people closed their eyes and listened to music. Today there's a lot of images that go with the music. A lot of music is crap and it's all commercial and the images are all trying to sell the record.