Watch Jennifer Hudson perform "Dreamgirls" hit songs at NBC's Upfront

Last week, Jennifer Hudson was announced as a new coach for Season 13 of The Voice returning in the fall. Jennifer Hudson is set to join Miley Cyrus, Adam Levine and Blake Shelton in the red chairs next season.

At NBCUniversal's Upfront on Monday, May 15, the Grammy Award-winning artist opened the presentation with a special, surprise performance medley of "One Night Only" and "I'm Telling You I'm Not Going" from the 2006 film "Dreamgirls," which earned her an Academy Award. This is a behind-the-scenes look at her rehearsal for the performance.

http://www.nbc.com/partner/widget-page?videoid=3519461

The 13th season will begin this fall.

Official show site: http://www.nbc.com/TheVoice.

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