Hayden Panettiere is a tiny powerhouse of talent. She performs her own songs on hit show Nashville, where she portrays a country music artist.
Jared Leto is the frontman for 30 Seconds to Mars. He's won MTV Music Awards, Billboard Awards, AND an Oscar.
Zooey Deschanel is famous for playing quirky characters but she's also known for her Indie rock duo, She & Him.
Neil Patrick Harris
Okay, so this isn't surprising to anyone who has seen Neil Patrick Harris host an awards show, but he's a pretty talented singer.
Kristen Bell voiced Anna in Disney's Frozen and surprised people with her singing ability. She performed "Do You Want To Build a Snowman" live, singing all three ages of Anna, and the video went viral.
Gwyneth Paltrow actually has a hit single under her belt and she dazzled the audience as a substitute music teacher on Glee.
Jamie Foxx won an Oscar for his portrayal of Ray Charles after singing all his own songs. He's also been a guest mentor on American Idol.
Taylor Momsen, of The Pretty Reckless, quit her gig as an actress on Gossip Girl to pursue singing full time.
Scarlett Johansson has cut two records and while they were met with critical confusion, all were quick to point out her vocal skills.
Amy Adams almost pigeonholed herself into princess roles because her portrayal in Enchanted was so fantastic.
He might not look it, but Joseph Gordon-Levitt is well known on the Indie rock circuit.
This one isn't so surprising. Ryan Gosling WAS a mousketeer, after all.
After seeing Pitch Perfect, everyone knows that Anna Kendrick can sing. What they probably DON'T know is that she was nominated for a Tony at the age of 13.
Robert Downey Jr.
Is there anything this man can't do? The answer is probably No. Check out his album "The Futurist" for proof.