크리스탈 (KRYSTAL) – melody (Moderato)
Track 01 from Single "'Melody' Project Part 2"
Release Date: 2010.05.28
크리스탈 (KRYSTAL) – 울컥
Track 01 from Single "내겐 너무 사랑스러운 그녀 OST Part.2"
Release Date: 2014.09.25
이특 (LEETEUK), 크리스탈 (KRYSTAL) – 투정
Track 01 from Single "일밤 오늘을 즐겨라 발라드 프로젝트"
Release Date: 2011.01.30
김준원 (글렌체크), 크리스탈 (KRYSTAL) – I Don’t Wanna Love You
Track 01 from Single "I Don't Wanna Love You"
Release Date: 2017.02.15
크리스탈 (KRYSTAL) – 나 때문에
Track 01 from EP "싸인 OST Part.5"
Release Date: 2011.02.10
크리스탈 (KRYSTAL) – 울컥
Track 01 from Album "내겐 너무 사랑스러운 그녀 OST"
Release Date: 2014.11.06
크리스탈 (KRYSTAL) – 나 때문에
Track 02 from Album "싸인 OST"
Release Date: 2011.02.24
Jessica (제시카), 크리스탈 (KRYSTAL) – Say Yes (Feat. KRIS (EXO))
Track 02 from Album "Make Your Move OST"
Release Date: 2014.04.07