For some musically inclined celebrities, playing music goes way beyond a hobby. Check out some celebs who have actually been in bands and see if you know the names of their bands, starting with Oscar-winner Russell Crowe.
Crowe's fronted two bands, including 30 Odd Foot of Grunts, which disbanded in 2005, and The Ordinary Fear of God (pictured).
Willis has been in several bands, including The Bruce Willis Blues Band and The Accelerators (the latter of which was formerly known as The Blue Devils), seen here performing for soldiers near Mosul, Iraq, on Sept. 25, 2003.
Feldman's band used to be known as Corey Feldman's Truth Movement but as of late has gone simply by Truth Movement.
Kevin Costner has been performing with his band, Modern West, since 2007, including this acoustic show at U.S. Army Garrison Grafenwoehr in Germany on March 20, 2010.
Bacon and his brother, Michael Bacon, have been recording music and touring as The Bacon Brothers since 1995.
While many people know Jeff Bridges did his own singing for his Oscar-winning role in "Crazy Heart" and on the soundtrack, not many know he has his own touring band, The Jeff Bridges Band.
Billy Bob Thornton
Thornton has described the sound of The Boxmasters, which he has fronted since 2007, as "electric hillbilly music."
Deschanel has shown off her singing talent onscreen in the movie "Elf" and her TV series "New Girl," but she also is one-half, along with M. Ward, of the band She & Him.
Leto ("Fight Club," "Panic Room") came to Hollywood to be a singer, helping form 30 Seconds to Mars in 1998, and found some acting roles along the way. These days he focuses mainly on his music.
The alternative rock group Dogstar, which lasted from 1991 through 2002, garnered more attention for its famous bassist, Reeves (far right), than for its music.
In addition to his acting, including roles in such movies as "Innerspace," "The Right Stuff" and "The Big Easy," Quaid also is a musician and plays on the side with his band, the Sharks.
Jada Pinkett Smith
Going by her first and middle name of Jada Koren, Pinkett Smith launched her music career in 2002, when she helped create the metal band Wicked Wisdom, for which she is a singer and songwriter.
Lewis fronted the rock band Juliette and the Licks from 2003 until they disbanded in 2009. She continues to record and tour under her own name, including her first full-length solo album "Terra Incognita" in 2009.
Martin began playing banjo at 17 and incorporated the instrument into his stand-up act. After a Grammy-winning bluegrass solo album in 2009, he joined up with the Steep Canyon Rangers for 2011's "Rare Bird Alert." In April 2013, he joined up with fellow Texas native Edie Brickell for the album "Love Has Come For You."
The action star plays the guitar and has recorded two albums, including 2006's "Mojo Priest," which featured his band, Thunderbox. Seagal and the band spent the summer of 2006 touring in support of the album.
Schwartzman (upper right), known for roles in "Rushmore," "Funny People" and HBO's "Bored to Death," started out as drummer for the rock band Phantom Planet in 1994, but left the band in 2003 to focus on his acting.
Brody (far left), best known as Seth Cohen on "The O.C.," plays drums for the indie rock band Big Japan, which also features fellow actor Bret Harrison (second from right), known for his work on comedies such as "Grounded for Life," "Reaper" and "Breaking In."
"House, M.D." star Laurie is just one part of the all-star actor band Band From TV, which also counts Bob Guiney from "The Bachelor," Greg Grunberg from "Heroes" and James Denton from "Desperate Housewives" among its members.
King (that's his back second from the right) is just one of the famous writers, including the likes of Dave Barry, Mitch Albom and Amy Tan, who make up the Rock Bottom Remainders, which has raised nearly $2 million for charity from their concerts since forming in the early 1990s.