'Heirs' handsome actor Choi Jin Hyuk has a special treat for fans of the show with the release of a song for the OST of the drama! The song, "Don't Look Back", serves as the love theme song between Kim Won, the character he plays, and Jeon Hyun Joo (Lim Joo Eun). With his husky and deep voice, the heartthrob actor impresses listeners as he demonstrates his vocal talents. However, seeing that as he has participated in the OSTs of other dramas before, such as the one for his previous starring drama 'Book of the House of Gu', his singing ability should come as no surprise to fans. Take a listen to his song.