Actor Joo Won, who started out in musicals, will be the voice behind the upcoming song "Don't Know How to Love" for his MBC drama '7th Grade Civil Servant' OST.

Joo Won shared on his recording experience, "The original song [by AshGray] itself is a difficult song, so I had a lot of difficulties, but I tried hard to give a different feel from the original version. With the help of a talented composer, I finished the OST recording successfully. I hope a good song is released from this."

A staff member commented, "I already knew that Joo Woon is a good singer, but while I was recording with Joo Won, I felt that Joo Won can also be a singer with his talent. He sang while adding his own color to the song, so I am 100% satisfied."

"Don't Know How to Love" expresses the love that Gil Ro feels towards Seo Won as he hides his identity in the drama.

Stay tuned for the release of this track!