효정 (오마이걸), 유아 (오마이걸), 지호 (오마이걸) – Say It To Me
Track 01 from Single "KARTRIDER X LINE FRIENDS OST Part 2. ‘Say It To Me’"
Release Date: 2021.12.29
승희 (오마이걸), 지호 (오마이걸), 비니 (오마이걸) – I Know
Track 01 from Single "스타트업 OST Part.4"
Release Date: 2020.10.25