Photo courtesy Trae Patton/NBC

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Incoming coaches on NBC's The Voice Pharrell and Gwen Stefani took the stage on Monday night to perform.

Pharrell performed his new single "Come Get It Bae" before joining Stefani for "Hollaback Girl," a song he co-wrote. The duo joins the singing competition this fall for its seventh season.

And what are the contestants' names again?

Watch both performances below.