T

he "battle rounds" continue and the coaches join forces with music industry professionals for guidance. Christina Aguilera teams up with singer/songwriter Sia Furler, Adam Levine with music producer Adam Blackstone, Cee Lo Green with singer Monica, and Blake Shelton with Grammy-winning singer Reba. In this phase the coaches will pit two of their own team members against each other in a dueling duet. After the vocal face-off, each coach, with the help of their adviser, must choose which of his/her singers are the strongest and four vocalists will advance to the live shows.

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