With that, Clarkson came onto the stage to screams for first major appearance since the birth of her daughter, River Rose, in June. "Look who's here," Yearwood said.

Yearwood and Clarkson then performed the passionate track, exchanging verses and sharing the chorus. Meanwhile, Clarkson's daughter looked on with blinged out headphones of her own. Not a bad first concert.

The title track from Yearwood's forthcoming album features Clarkson and will impact at country radio on Sept. 15. "I love how 'PrizeFighter' makes me feel� like even when the odds are against me, I can do anything," Yearwood said in a press release. "It's a message we all need to hear, and the track just plain rocks! I can't wait for folks to hear it."