Watch all four sneak peeks for next week's 'The Voice' battle rounds

NBC's "The Voice" offered sneak peeks at the Season 12 battle rounds during Wednesday's recap show - but if you missed "The Best of the Blind Auditions," you can still watch all of the teaser footage here before the battles get underway on Monday. Use the media player included with this article to watch the overall preview of the next part of the singing competition, and keep reading for more on each individual team.

In the battle rounds, two members from each team compete against each other to determine which one of them will remain in the competition. Adam Levine, Alicia Keys, Blake Shelton and Gwen Stefani will also each be able to steal two of the artists who do not advance, leaving all of their teams with eight singers at the end of the phase. To help them coach their artists in this part of the competition, each coach has been assigned a celebrity mentor.

Defending champions Team Blake will be coached by Shelton and Luke Bryan. Bryan, of course, is a longtime friend of Shelton and formerly co-hosted the Academy of Country Music Awards with him until Shelton left the position last year. Bryan has also appeared on "The Voice" as a musical guest performing his single "Kick the Dust Up" from his album Kill The Lights. Bryan is not only an award-winning country artist but a master of bringing personality to every performance and connecting with the audience, which is an often overlooked part of "The Voice." Add that to his usual banter with Shelton and this is the team to watch going into the Season 12 battles. Get a preview of Team Blake's training here.

Team Gwen has enlisted the services of a legend not just in pop music, but all of music: Celine Dion. Dion is one of the biggest female singers in the history of music who still commands packed houses for her long-running residency at The Colosseum at Caesars Palace in Las Vegas (click here for tickets). Her addition to "The Voice" ought to draw in a wider audience as people tune in just for her star power. She could easily be a coach on the show herself, never mind her giving some fantastic advice to Gwen Stefani's hopefuls. Get a preview of Team Gwen's training here.

Team Adam is working with Grammy Award and Academy Award winner John Legend, who's been back in the headlines recently for his contributions to the Oscar-winning movie "La La Land." Legend isn't just a well-known performer but he's also a great songwriter and very sharp when it comes to articulating his points to an artist. That makes him a good counterpart for Adam Levine, who is likewise a multi-tasker in the studio. The two of them together are the most cerebral duo of Season 12 and that will give them a different approach. Get a preview of Team Adam's training here.

Last but certainly not least, Team Alicia has called upon DJ Khaled. This is a different combination and the most unpredictable of the four, but one thing that Khaled will absolutely bring to Alicia Keys' artists is creativity. He's not only a recording artist but has recently made a whole second career filming commercials for tax brand TurboTax. If he can come up with similarly different ideas on "The Voice," we could see that dash of surprise that's been mostly absent from the show since Cee Lo Green departed. Get a preview of Team Alicia's training here.

Season 12 is bursting with celebrity talent, but who's got the best advisor? Fans will have to watch next week to judge for themselves.

"The Voice" airs Mondays and Tuesdays at 8 p.m. on NBC.