Premieres Sunday 9/8c. Watch online previews.
The crowd returns to Universal Studios' soundstage 12. Once again, Christina Aguilera, Blake Shelton, CeeLo Green and Adam Levine are joined by their trusted advisors, Mary J. Blige, Michael Buble, Rob Thomas and Billie Joe Armstrong. Their mission: to pair artists up in a head-to-head duet to determine who should move ahead and who should head home.