In the 2009 musical drama, she was romantically paired with CNBLUE's Jung Yong Hwa and Jang Geun Suk, but she shared an endearing, childlike friendship with Jeremy, who was portrayed by Lee Hong Ki.

While "Insensible" highlights his talents as a balladeer, as exemplified in an April episode of "Masked Singer," the midtempo dance tracks "Let's Seize the Day" and "Be Your Doll" embrace his capability to move beyond the trappings of Korean pop-rock.

Lee previously delivered notable K-Drama original soundtrack appearances, including the stirring track, "I'm Saying" from "The Heirs," "FM302" marks his first independent endeavor from FTISLAND.