VIDEO: Idina Menzel Performs 'Let It Go' as FROZEN Cast Reunites in L.A.

For the first time in forever, the music of "Frozen" was celebrated with live performances at Los Angeles' Vibrato Grill Jazz club last night. Kristen Bell (voice of Anna), Idina Menzel (voice of Elsa), Josh Gad (voice of Olaf) and Santino Fontana (voice of Hans) took the stage, accompanied by a live orchestra conducted by David Metzger, to perform songs from the Oscar-nominated, Golden Globe-winning film.

Below, check out Idina Menzel's performance of the film's Oscar-nominated song, "Let It Go!"

The packed house included songwriters Kristen Anderson-Lopez and Robert Lopez, composer Christophe Beck, directors Chris Buck and Jennifer Lee, producer Peter Del Vecho and executive producer John Lasseter, in addition to a host of celebrity guests. In theaters since Nov. 27, 2013, "Frozen" has earned more than $900 million worldwide.

Gad, who emceed the event, kept the laughs coming all night. During his introduction of Tony Award winner Menzel, the actor quipped that 'Let It Go' was by far his daughter's favorite from the film, which is "giving me a complex."

The "Frozen" soundtrack has held the No. 1 position on the Billboard 200 chart for four non-consecutive weeks, and is the longest-running No. 1 film soundtrack since 2003. Worldwide, the album has sold more 1 million units and 3.4 million tracks. At iTunes, the album has peaked at No. 1 in more than 30 countries.

Video courtesy of The Hollywood Reporter.