The story of Alan Freed, the pioneering disc jockey who was instrumental in introducing and popularizing rock 'n' roll in the 1950s.The story of Alan Freed, the pioneering disc jockey who was instrumental in introducing and popularizing rock 'n' roll in the 1950s.The story of Alan Freed, the pioneering disc jockey who was instrumental in introducing and popularizing rock 'n' roll in the 1950s.