이서진 – 아직은 이별하지 않아
Track 01 from Single "RAINBOW STATION Episode.3"
Release Date: 2022.09.10
송혜지, 이서진 – 날아가고 싶다
Track 01 from Single "날아가고 싶다"
Release Date: 2020.11.25
이서진 – Greatest Love Of All
Track 02 from EP "K팝 스타 시즌6 TOP10 Part.1"
Release Date: 2017.02.26
이서진 – 응원
Track 01 from Single "K팝 스타 시즌6 (이서진, 석지수)"
Release Date: 2017.02.05
이서진 – 피나타
Track 17 from Album "Pop-Kon 5th"
Release Date: 2020.02.26