Singer Huh Gak and Yoo Seung Woo revealed their version of 4minute HyunA and BEAST Jang Hyun Seung's "Trouble Maker" and is receiving much attention.

Huh Gak, who has recently made a comeback, revealed a self-cam video through YouTube.

In the video, Huh Gak and Yoo Seung Woo are seen back stage prepping for their performance. Yoo Seung Woo then suddenly started to play the song "Heartbreaker" with his guitar and Huh Gak joined in.

The two sang the song as if the song was made for them, making everyone laugh.

Internet users commented, "They should make a re-make of this song" and "They look great together!"