Adam Levine took two 'polar opposites' -- country crooner Jeff Jenkins and electro-pop singer Casey Desmond -- and pitted them against each other in his team's battle of Elton John's 'Don't Let the Sun Go Down on Me' on tonight's episode of 'The Voice.'

"I think Jeff is an amazing vocalist, but I do feel like I am a good performer and I'm gonna do the best I can," said Desmond when she learned she would be battling Jenkins.

"She's crazy awesome," remarked Jenkins about Desmond. "She has so much experience onstage performing."

Levine, along with Maroon 5 musical director Adam Blackstone, mentored the two singers as they rehearsed for the performances. "They're both so strong," said Levine. "Here are these two polar opposites … It's gonna be a really brutal decision."

When they entered the ring for the battle, the two performers couldn't look any more different. The scarlet-haired Desmond and the denim-wearing Jenkins traded verses on the Elton John tune, with Jenkins' country twang commanding a bit more power than Desmond's pop stylings.

While Levine deliberated, the other coaches gave their opinions. Christina Aguilera and Cee Lo Green both leaned toward Jenkins, and it was time for Levine to make his decision. After a commercial break, the Maroon 5 frontman said there was something 'mind-blowing' about Jenkins, and chose him to move on to the next round. As a result, Desmond was eliminated from the competition.

Watch Jeff Jenkins and Casey Desmond Battle on 'The Voice'