occasionally your teeth, and hypnotizes your children. but what you may want to know is that mtv is responsible for a complete revolution in the music business in this country. ♪ unskinny bop just blows me away ♪ >> mtv makes the hits. it's as if there were just one national radio station for new songs. >> ending the '80s in terms of rock music, you're getting a lot of hair bands. you've got poison, ratt, warrant. ♪ she's my cherry pie ♪ ♪ cool drink of water such a sweet surprise ♪ ♪ tastes so good make a grown man cry sweet cherry pie ♪ >> a lot of hairspray going on. there's a lot of sexually suggestive lyrics. it's not particularly deep music, but mtv pushing it. so that's selling. >> when i would turn on mtv, all the rock bands looked a certain way. they played a kind of music. they were expected to have a certain facade. >> mtv's ratings are surprisingly small.