NBC is upping the star power on "The Voice" by adding singers Reba McEntire, Monica and Sia and music producer Adam Blackstone as new advisers.
Also read: Ratings: 'The Voice' Beats 'Dancing With the Stars,' 'Glee' in Major Upset
They join Christina Aguilera, Cee Lo Green, Adam Levine and Blake Shelton. Aguilera will team up with Sia, Levine with Maroon 5 music director Blackstone, Green with Monica, and Shelton McEntire, who goes by just Reba these days.
The coaches will eventually two of the artists on each of their teams against each other in a series of dueling duets. Each of the coaches chose their advisers to help them at the next “Battles” stage, lasting four episodes, NBC said.
