VIDEO: Watch Steve Kazee Perform 'Hit Me Baby One More Time'!

Tony Award-winner Steve Kazee recently channeled his inner Britney Spears. Below, watch the ONCE star perform "Hit Me Baby One More Time"!

Steve Kazee is a Tony and Grammy Award-winning Broadway veteran who most recently starred in the original Broadway cast of ONCE.

In 2006, Kazee played Dumas Shepherd in an episode of Conviction. In 2007, he appeared as Michael Barlow in Medium and Mark Green in Numb3rs. In 2008, he appeared on NCIS as Michael Locke, and in 2009, he played Dominic Humphreys on CSI: Crime Scene Investigation. Kazee had a starring role on CMT's Working Class, in which he played Nick Garrett. Most recently, in 2013, he appeared on Elementary as Jeff Hines and on Drop Dead Diva as Dustin Wycott. In 2015, he guest starred in season 5 of Showtime's series Shameless.

Onstage, he starred in several shows on- and off-Broadway. He appeared in NYSF's As You Like It. In 2006, he appeared as Timmy Cleary in The Subject Was Roses, which played at the Kennedy Center from January 7 to 29. Later that year, Kazee was cast as Sir Lancelot in Spamalot, then in Seascape as the Leslie understudy. In 2007, he starred as Bill Starbuck in the revival of 110 in the Shade, and in 2008, he played Sobinsky in To Be Or Not To Be, which ran from September 16, 2008 through November 16, 2008 at the Samuel J. Friedman Theatre.

Kazee starred as Guy in the stage adaptation of Once, which began previews on February 28, 2012 and opened on March 18, 2012 at the Bernard B. Jacobs Theatre. He originated the role Off-Broadway when it opened at the New York Theatre Workshop on December 6, 2011. Ssince the show's opening, Kazee has made several TV appearances with the show, including the March 29, 2012 episode of Late Show with David Letterman and the April 6, 2012 episode of the Today Show. Kazee won the 2012 Tony Award for Best Performance by a Leading Actor in a Musical. His final performance as 'Guy' was scheduled to be March 24, 2013, but due to a vocal injury, took place on February 6, 2013. Less than a week later, on February 10, 2013, Kazee and the cast of "Once" won the Grammy for Best Musical Theater Album at the 55th Annual Grammy Awards.

He is featured on Christina Perri's song "A Thousand Years, Pt. 2," which appears on The Twilight Saga: Breaking Dawn - Part 2 (Original Motion Picture Soundtrack).