Julio Cesar Castillo, Terisa Griffin Julio Cesar Castillo, Terisa Griffin

Blake Shelton, you've done it again. The country crooner has always been a bit quirky, and that was fully evident on Monday's The Voice when he paired soulful singer Terisa Griffin with mariachi man Julio Cesar Castillo.

Since making it through the blind auditions with his rendition of "La Bamba," Julio had yet to prove his versatility, making him a bit of an underdog in the competition. Blake attempted to find the middle ground between Terisa's and Julio's polar opposite styles with "Conga" by Latin diva Gloria Estefan. The resulting battle was one to remember.

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Even more entertaining than watching Julio and Terisa perform the fast-paced hit was the reaction shots of the coaches' faces while they tried to process the strange duet. "For the first time on this show, I'm kind of speechless," Christina Aguilera said.

Adam Levine shared Xtina's dilemma, but the singer did manage to give his pal some kudos. "Blake, you've really outdone yourself on this one," he said. "It was odd and it worked."

Watch the full performance below to see who came out on top.