스위트오 – Calling
Track 01 from Single "Calling"
Release Date: 2017.07.21
스위트오 – Pride
Track 01 from Single "Pride"
Release Date: 2017.09.27
스위트오 – 늦지 않았기를
Track 01 from Single "늦지 않았기를"
Release Date: 2014.10.27
스위트오 – 봄바람
Track 01 from Single "봄바람"
Release Date: 2016.03.09
스위트오 – 보물지도
Track 01 from Single "보물지도"
Release Date: 2018.09.05