차오루, 키썸 (Kisum), 예린 (여자친구) – 왜 또 봄이야
Track 01 from Single "왜 또 봄이야"
Release Date: 2017.03.16
차오루, 수웅 – Secret Romance
Track 04 from EP "Secret Romance OST"
Release Date: 2019.02.22
차오루, 수웅 – Afternoon(Duet ver.)
Track 02 from EP "Secret Romance OST"
Release Date: 2019.02.22
차오루 – Afternoon(Solo ver.)
Track 01 from EP "Secret Romance OST"
Release Date: 2019.02.22
차오루, 린지, 예지 – Good Time
Track 02 from Single "투유 프로젝트 - 슈가맨 Part.36"
Release Date: 2016.06.22