Ailee and Eunji, both of whom are known to possess power vocals, went head to head on the February 23 broadcast of 'Finding Sugar Man.' 

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Ailee, who was teamed up with Yoo Jae Suk, sang a reinterpreted version of Jung Il Young's original ballad track "Prayer." The piece was spiced up with hints of British rock, and Ailee's voice was the perfect complement to the guitar and piano. 

Meanwhile, Eunji was teamed up with Kim Je Dong and sang K2's "To Her Lover," which was originally a ballad track and had orchestral instruments added to it for a dramatic effect. 

It was neck and neck, but in the end, Eunji took more audience votes, having moved the hearts of those in their twenties and forties. 

Check out the performance clips and let us know whose vocals you think were better!