Sneak Peek! 'The Voice' Coaches Reunite

Hold on to your hats! Gwen Stefani, CeeLo Green and Usher return to “The Voice” as guest mentors on Monday. Watch the sneak peek below!

ExtraTV.com caught up with “The Voice” coaches and contestants and a Top 8 party in L.A., where we got the inside scoop on what to expect.

Blake Shelton, who is teaming up with CeeLo, said the two have never lost touch. “People think Adam and I are the odd couple, but to me CeeLo and I are… when we see each other we just laugh… we never stop laughing.”

He added that Green has a great way of putting things in a new perspective, teasing, “CeeLo is from another planet, and he'll be the first to tell you.”

Corey Kent White from Team Blake said he got some welcome advice from the “Forget You” singer. Green told him, “Country isn't in your cowboy boots, it's in your core, and as long as you know who you are it's going to show in the song.”

Hannah Kirby saw many parallels between herself and the star. “I want to be a really theatrical thematic artist that is a big part of who I am as a musician, and that's kind of how CeeLo is as an artist a lot of production and theatrics, so I was really excited to get to work with him.”

Joshua Davis, the last remaining contestant on Team Adam, said rehearsals this week were his favorite so far. “Usher is really incredible. I was really caught off guard and blown away by his sincerity and his passion… the way he really connects to somebody.”

Pharrell said Gwen was schooling his contestants Sawyer Fredericks and Koryn Hawthorne in all thing style. “Her thing is style, so even when she talks about technique, it's about style, or when she talks about clothes it's about style… like a person's style is their way.”

Koryn loved getting a female perspective, and added that she saw a real connection between Pharrell and Gwen. “They're on the same page. It's crazy how they just connect, so it was pretty cool to have that little combo.”