There's an old joke in Hollywood that all movie stars want to be music stars and that all musicians want to be movie stars. There is a long list of musicians who have taken roles in movies, and more often than not, it does not work out so well.
But, when it does work -- it sings like crazy.
We looked over Hollywood history and found 23 moments in the movies where musicians took a chance on an acting role and scored.
Who could forget a certain country superstar and his sublime turn that can be seen when you watch The Blind Side online?
And watch The Fighter online and there's someone who has successfully lost his musician moniker and become one of the most bankable movie stars on the planet.
It's hard to remember when this Parents Just Don't Understand musician wasn't a huge movie star, but when you watch Independence Day online, you'll see the moment that he arrived.
Click through and see our 23 best musician moments in the movies to see which singers truly sang onscreen!