My Sweet Mobster (Original Television Soundtrack), Pt.1 Single • 2024 25th Anniversary Theme Songs Collection Album • 2024 Once Upon a Small Town (Original Television Soundtrack), Pt.5 Single • 2022 18 again, Pt. 9 (Original Television Soundtrack) Single • 2020 Why didn't you say that? Single • 2019 30 But 17 OST Part.1 Single • 2018 Couple on the Backtrack (Original Television Soundtrack), Pt. 7 Single • 2017 Couple on the Backtrack (Original Television Soundtrack), Pt. 1 Single • 2017 욱씨남정기 (Original Television Soundtrack) Pt. 1 Single • 2016 
