Wheesung and his father got together for a duet and took the final win as a team on the May 24 episode of 'Immortal Song 2'!

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The competitive show held a family special for the first time, and the R&B singer and dad covered the familiar hit "White Butterfly" by Kim Jung Ho with his mother in the audience. Wheesung revealed the song was a favorite of his dad's that they transformed into a smooth, soulful track.

Check out their winning performance above!