The April 7 broadcast of MBC's 'Duet Song Festival' welcomed SS501 member Heo Young Saeng to the stage again for a 'Best of the Best' special, as he performed SHINee's "Sherlock (Clue + Note)"!

Pairing up with Lee Jeonghyeok, the idol star gave an upbeat performance singing at the top of his lungs, captivating viewers.

Will they be able to top the current lead of 429 points?

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Watch the lively performance above! You can also catch A Pink Eunji's performance on the same episode, here.