Question: Who was the band in back to the future?
Disambiguated questions and answers: question: Who was the fictional band in back to the future that played Earth Angel?
Who was the fictional band in back to the future that played Johnny B. Goode?
Who was real band on the back to the future soundtrack that played Back in Time?
Who was the real band that played Mr. Sandman, included in the movie back to the future?
answer: Marvin Berry & The Starlighters
Marvin Berry and The Starlighters
Marty McFly with The Starlighters
Huey Lewis and The News
The Four Aces
Natural Questions answer: Marvin Berry and The Starlighters (from the Wikipedia article "Back to the Future (soundtrack)")