The battle rounds will be underway Monday night on Season 8 of The Voice, which is why the advisors were announced earlier this week and now there are sneak peek clips into the super competitive stage of the singing competition.

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This Monday, Nick Jonas, Lionel Richie, Meghan Trainor and Ellie Goulding were named the advisors via The Voice's Twitter for the battle rounds.

Below are four sneak peek clips from The Voice's YouTube channel of Jonas, Richie, Trainor and Goulding working with Christina Aguilera, Pharrell Williams, Blake Shelton and Adam Levine plus their teams.

'The Voice' Battle Round Advisors Have Been Announced

In the Team Christina preview, Aguilera thanks Jonas for coming to help her and her team out.

"I'm thrilled," Jonas replied, adding, "It looks like we got some good people."

Ameera Delandro is paired against Sonic and Delandro seems to be a little star struck meeting the Jealous singer.

Delandro and Sonic experience some issues in the clip, but later on a bit of their battle is shown and it looks like they pull it together.

Then, Clinton Washington and India Carney are paired against each other and Aguilera gave them Stay by Rihanna and Mikky Ekko.

Jonas advised them "not to cut off the end of your words," adding, "Let those live especially because that's something you do really well."

In the Team Pharrell preview, Williams' team members are also experiencing being star struck since Richie is onboard to guide them.

"I was really, really floored," Anthony Riley admitted about seeing Richie alongside his coach.

"I love The Voice because you have real artists teaching artists how to be artists," Richie shared.

Williams revealed the kind of artists he's looking for; they have to be great, but "different" too.

In the Team Blake preview Trainor winds up in tears during the rehearsal of Brian Johnson and Joshua Davis being paired together.

"It was really good," she explained. Their performance really moved her.

Lastly, the Team Adam preview shows the contestants are also amazed to see such a star like Goulding around.

Goulding even lent her vocals to her own song since one of Levine's battle rounds will be covering Love Me Like You Do and he wanted his contestants to hear the purity in her voice as she sang it.

Check out all the sneak peeks below.

Tune in on Mondays and Tuesdays starting at 8 p.m. ET for Season 8 of The Voice on NBC.

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The Voice, Television, Nbc, Lionel Richie, Nick Jonas