Pump Up The Volume
Mark Hunter, a high school student in a sleepy suburb of Phoenix, Arizona, starts an FM pirate radio station that broadcasts from the basement of his parents' house. Mark is a loner, an outsider, whose only outlet for his teenage angst and aggression is his unauthorized radio station. His pirate station's theme song is "Everybody Knows" by Leonard Cohen and there are glimpses of cassettes by such alternative musicians as The Jesus and Mary Chain, Camper Van Beethoven, Primal Scream, Soundgarden, Ice-T, Bad Brains, Concrete Blonde, Henry Rollins, and the Pixies. By day, Mark is seen as a loner, who has to make extreme effort to be sociable around others; by night, he expresses his outsider views about what is wrong with American society. When he speaks his mind about what is going on at his school and in the community, more and more of his fellow students tune in to hear his show.
I loved Pump Up The Volume back in 1990 and happened to catch it again the other day. It still stands up extremely well today and is well worth watching if you have a couple of hours spare. Currently included on Amazon Prime Video.