Singer Yoon Do Hyun revealed a picture of himself holding up the copyright approval paper.

Yesterday, Yoon Do Hyun posted on his Twitter, "Last fall when Song Chang Shik signed the copyright approval and told me not to feel small in the US~ Thank you" along with a picture.

In the picture, Yoon Do Hyun is holding up the copyright approval paper and is standing next to the senior singer Song Chang Shik.

Internet users who saw this commented, "Congratulations on your start in the US," "'Tobacco Shop Man' is classic," etc.

Yoon Do Hyun revealed that he will be starting his singing career in the US and chose Song Chang Shik's old song 'Tobacco Shop Man' as his debut song.

Photo Credit: Yoon Do Hyun Twitter