Watch Anna Kendrick Challenge James Corden To An A Cappella Riff-Off

"The Late Late Show" battle was backed up by the Filharmonics.

Don't brag about your singing skills where Anna Kendrick can hear you. Last night (May 15) on "The Late Late Show with James Cordon," the "Pitch Perfect 2" star stormed in to challenge the host to a riff-off.

"I heard you've been telling people that you're the best a cappella singer in town," said Kendrick, already decked out in her team jacket. She asked Corden to prove it—so he busted out his own zip-up, and invited on the Filharmonics to back up their battle.

The two singers competed through two categories before Corden admitted defeat—but not before Kendrick could show off her rendition of Ludacris' "Move Bitch (Get Out the Way)." Watch her go head to head with Corden below.