American Hot Wax.

This is the story loosely based on Cleveland disc jockey Alan Freed, who introduced rock'n'roll to teenage American radio audiences in the 1950s. Freed was a source of great controversy: criticized by conservatives for corrupting youth with the "devil's music"; hated by racists for promoting African American music for white consumption; persecuted by law enforcement officials and finally brought down by the "payola" scandals.