We're surprised too!
It turns out that some of our favorite actors are also pretty talented musicians (okay, some more than others).
These 18 actors are either currently a member of a band or they've been a member of one in the past. See which actors really love to rock it out below!
Though Juliette Lewis is probably best known for her roles in films like What's Eating Gilbert Grape and Natural Born Killers, she was also the lead singer of her rock band, Juliette and the Licks, which was formed in 2003.
We all remember Jared Leto as Jordan Catalno from My So Called Life. But when is isn't acting, Leto is the lead singer of his band, 30 Seconds to Mars, which has been active since the late 90s.
Yep. Bruce Willis is even cooler than you thought he was. When he isn't busy acting, he's singing with his band, Bruce Willis and The Accelorators.
Adam Brody's character played in a band on Gilmore Girls before he headed over to The O.C. Turns out, in real life, he's a drummer in the indie rock band Big Japan.
Dennis Quaid and the Sharks
Dennis Quaid is one talented guy. Besides being an incredible actor, he's also a pretty talented musician. Check out his vocals in his band, Dennis Quaid and the Sharks.
Jada Pinkett Smith
Jada Pinkett Smith is already part of a musical family, but what you may not have known is that when she rocks out, she REALLY rocks it out. Her metal band, Wicked Wisdom, was formed in 2002.