Reba McEntire and Monica


Coaches Christina Aguilera, Adam Levine, Cee Lo Green and Blake Shelton chose their advisers to help them with the next round of the competition, dubbed the "Battles" phase. Contestants on the same team will go head-to-head and their coach chooses the victor.

Ratings: The Voice makes itself loudly heard in debut

Aguilera will team with singer/songwriter Sia; Levine will work with Maroon 5 music director Blackstone; Green has chosen Monica, best known for her album "The Boy Is Mine"; and Shelton has country legend McEntire.

The series, which debuted to 11.8 million viewers, will air at 9/8c this Tuesday before moving to its regular 10/9c timeslot on May 10.