세인 (say’n) – 뚝뚝뚝
Track 01 from Single "우리 갑순이 OST Part.13"
Release Date: 2017.02.04
세인 (say’n) – 못보내
Track 01 from Single "아임쏘리 강남구 OST Part.5"
Release Date: 2017.02.20
세인 (say’n) – 좋아해
Track 01 from Single "초인가족 2017 OST Part.8"
Release Date: 2017.04.25
세인 (say’n) – 못보내
Track 12 from Album "아임쏘리 강남구 OST"
Release Date: 2017.06.14
세인 (say’n) – 좋아해
Track 09 from Album "초인가족 2017 OST"
Release Date: 2017.07.11