Topp Dogg's Sangdo surprised fans with a cover of IU's track "Ending Scene" from her 'Palette' album.
The black and white footage featured the idol star dressed casually as he sang his heart out in the studio, causing hearts to flutter.
SEE ALSO: IU gives a sneak peek of 'Flower Bookmark 3' with instrumental track list teaser
Listen to the emotional rendition above!
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