Chris Haston/NBCReady to have a really catchy song in your head? OK, you asked for it!
In this exclusive sneak peek at next Monday's episode of The Voice, Erin and Gwen step into the battle ring to belt it out all in an effort to survive the next round...
Erin and Gwen have very different voices, which is one of the great things about The Voice's battle rounds. It's like the meanest duet setup ever…two go in, one comes out! In this case, they're singing for a spot on Blake Shelton's team. But it's Christina Aguilera who seems to have the biggest reaction to their battle duet.
Who do you think won this round: Erin or Gwen?