Question: Who was the band in back to the future?

Disambiguated questions and answers:
context: Back to the Future: Music from the Motion Picture Soundtrack is the soundtrack album to the film of the same name. It was released on July 8, 1985 by MCA Records. The album included two tracks culled from Alan Silvestri's compositions for the film, two tracks from Huey Lewis and the News, two songs played by the fictional band Marvin Berry and The Starlighters, one played by Marty McFly and The Starlighters, and two pop songs that are only very briefly heard in the background of the film.
question: Who was the fictional band in back to the future that played Earth Angel?
short_answers: Marvin Berry & The Starlighters

Marvin Berry and The Starlighters
wikipage: Back to the Future (soundtrack)

context: No context provided
question: Who was the fictional band in back to the future that played Johnny B. Goode?
short_answers: Marty McFly with The Starlighters

context: Back to the Future: Music from the Motion Picture Soundtrack is the soundtrack album to the film of the same name. It was released on July 8, 1985 by MCA Records. The album included two tracks culled from Alan Silvestri's compositions for the film, two tracks from Huey Lewis and the News, two songs played by the fictional band Marvin Berry and The Starlighters, one played by Marty McFly and The Starlighters, and two pop songs that are only very briefly heard in the background of the film.
question: Who was real band on the back to the future soundtrack that played Back in Time?
short_answers: Huey Lewis and The News
wikipage: Back to the Future (soundtrack)

context: No context provided
question: Who was the real band that played Mr. Sandman, included in the movie back to the future?
short_answers: The Four Aces

Long answers:
knowledge: content: Back to the Future is a 1985 American science fiction film directed by Robert Zemeckis. Written by Zemeckis and Bob Gale, it stars Michael J. Fox, Christopher Lloyd, Lea Thompson, Crispin Glover, and Thomas F. Wilson. Set in 1985, the story follows Marty McFly (Fox), a teenager accidentally sent back to 1955 in a time-traveling DeLorean automobile built by his eccentric scientist friend Doctor Emmett "Doc" Brown (Lloyd). Trapped in the past, Marty inadvertently prevents his future parents' meeting—threatening his existence—and is forced to reconcile the pair and somehow get back to the future.
wikipage: Back to the Future

content: The soundtrack includes two tracks from American composer Alan Silvestri's score for the film, two pop tracks from American rock band Huey Lewis and the News, two songs played by the fictional Marvin Berry and The Starlighters, one played by the fictional Marty McFly with The Starlighters
wikipage: Back to the Future soundtracks Back to the Future

content: American rock band Huey Lewis and the News performed "The Power of Love" and "Back in Time".
wikipage: Back to the Future soundtracks Back to the Future

content: The Four Aces' version was notably featured in the movie Back to the Future, when Marty first realizes he is in 1955.
wikipage: Mr. Sandman The Four Aces version
long_answer: Back to the Future is a 1985 American science fiction film which follows Marty McFly, a teenager accidentally sent back to 1955 in a time-traveling DeLorean automobile built by his eccentric scientist friend Doctor Emmett "Doc" Brown. The soundtrack for he movie includes Back in Time and The Power of Love, two pop tracks from American rock band Huey Lewis and the News, a version of Earth Angel played by the fictional Marvin Berry and The Starlighters, and a version of Jhonny B' Good played by Marty McFly with The Starlighters. The movie also features Mr. Sandman by The Four Aces, which plays when Marty first realizes he is in 1955.