H-Line – 잘 있어 (Feat. 임영신)
Track 01 from Single "잘 있어"
Release Date: 2016.12.14
H-Line – 회색비 (Feat. 이현)
Track 01 from Single "회색비"
Release Date: 2016.06.27
H-Line, 시올 – 유치해볼까
Track 01 from Single "유치해볼까"
Release Date: 2018.05.10
H-Line – 웃음이나 (Feat. 박주완)
Track 01 from Single "웃음이나"
Release Date: 2017.01.18