His solo vocals can be heard on "Dreaming" and the title track of "Dream High." He also appeared on "The Moon Embracing the Sun" soundtrack and provided two songs for "My Love from the Star."

While there are several solo vocalists including Lee Seung Gi and Seo In Guk who have seamlessly transitioned to acting, there are fewer actors who possess the abilities to segue into vocal music. Here are 7 K-Drama stars with excellent singing voices.

1. Kim Soo Hyun stunned audiences with his delivery of "This is the Moment" and "Because You're My Woman," during a karaoke segment in "Producer."

2. Jang Nara may be known to international audiences for K-Drama roles, but she was a K-pop trainee with SM Entertainment.

Jang Nara transitioned from a vocal music career to acting. She gained immense popularity in China, as a multi-talented artist. Jang recently starred in the hit series, "Fated to Love You" and "Mr. Baek." She is set to return to drama, opposite vocalist-turned actor Seo In Guk, in "I Remember You."

3. Lee Seung Gi may be known for his roles in dramas such as "Gu Family Book," but he just released his sixth studio album.

Lee Seung Gi has successfully tackled singing, acting, and variety show hosting. He debuted as a vocalist at age 17, before debuting as an actor in the 2006 drama, "The Infamous Chil Sisters." While he is best known for his drama roles in series including "Gu Family Book," he is an accomplished vocalist who released his sixth studio album on June 10.

4. Jang Geun Suk transitioned from his role in "You're Beautiful" to a successful career as a pan-Asian vocal phenom.

5. Park Shin Hye possesses a clear, sweet voice which lends itself to indie pop and soundtracks.