Amber Liu (엠버) – Beautiful
Track 01 from EP "The 1st Mini Album 'Beautiful'"
Release Date: 2015.02.13
Amber Liu (엠버) – Other People
Track 01 from Single "X Part 2"
Release Date: 2019.11.07
Amber Liu (엠버) – Borders
Track 01 from Single "Borders - SM STATION"
Release Date: 2016.03.25
루나 (LUNA), Amber Liu (엠버) – 사랑일뿐야
Track 02 from Single "투유 프로젝트 - 슈가맨 Part.6"
Release Date: 2015.11.25