Talk Hard.

Film The AV Club on Pump Up The Volume:

"The movie originally came from a script called Radio Death,” he explained to The A.V. Club. “It was the story about a guy who was planning to commit suicide on the air, but was having so much fun announcing it and discussing different ways with which he could off himself. But every night he would have his suicide on his mind and he’d go on-air and say, ‘Stay tuned, because this night could be your lucky night. I might kill myself on the air.’ And then that became his whole thing. So I wrote the script about this much darker guy than Happy Harry Hard-On wound up being."

Somewhere I have an old cassette on which I missed all of Christian Slater's DJ material from the film with music from the soundtrack which with the old tape to tape system sounded just like I'd nabbed it from a dodgy broadcast from pirate radio.