The battle rounds for The Voice kick off tonight, Oct. 12, and it is obvious the coaches worked hard with their teams and the advisors that came aboard to help mentor them.

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Blake Shelton and Adam Levine got up to a bit of extra fun though with their teams' advisors, respectively Brad Paisley and John Fogerty.

While country superstar Paisley and Grammy-winning Fogerty gave Team Blake and Team Adam killer tips for the upcoming battles, they also managed to have jam sessions with Shelton and Levine.

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The Voice YouTube channel uploaded two videos that were recorded during the battle round rehearsals, in which Shelton and Paisley perform together in the rehearsal studio where the teams practice and Levine and Fogerty perform together too.

Levine and Fogerty performed Fogerty's band Creedence Clearwater Revival's song "Looking' Out My Back Door," which seemed to delight the rehearsal space band and Levine greatly as seen below.

Levine and Fogerty even bumped fists at the end of their performance and The Voice coach was sporting quite a large grin.

Meanwhile the country stars sang their rendition of George Strait's "The Fireman" as seen below.

Like Levine and Fogerty, Shelton and Paisley seemed to be having a grand time performing together!

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

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The Voice, Television, Nbc