choijinhyuk Actor Choi Jin Hyuk appears on the OST for Gu Family Book, singing "Best Wishes To You," which was originally sung by The One. We all knew he had a masculine, husky voice playing Wol Ryung, but we didn't think he would actually be this good at singing! Choi Jin Hyuk's version of "Best Wishes To You" is acoustic, which accentuates his thick and mellow voice as well as the mournful emotions of Wol Ryung. The actor also revealed during an interview that he had always loved to sing and was grateful for the chance to fulfill his dreams of becoming a singer through Gu Family Book. (Source: Nate)