Singer Seo In Guk revealed a teaser video today for his new song, "I Can't Live Because of You."

This teaser video revealed close up images of his clear and natural face, gaining much attention.

Last year, Seo In Guk received much praise and attention with his role in the tvN drama, "Respond 1997."

It seems that he has decided to comeback as a singer this year to show another side of him.

His agency commented, "He is currently number 1 for requests to appear on commercials, movies, TV programs and more. He hopes to show a different style of music with his new album."