Chooy (츄이) – 작은 소리로 안녕
Track 01 from Single "작은 소리로 안녕"
Release Date: 2019.10.01
마요 (Mayo), 정창현, 채하얀, Chooy (츄이) – 흰 눈이 오면 고백할까
Track 01 from Single "Winter of Reindeer"
Release Date: 2017.12.12
Chooy (츄이) – 왜그래
Track 01 from Single "왜그래"
Release Date: 2019.02.27
Chooy (츄이) – 달콤해요
Track 01 from Single "달콤해요"
Release Date: 2018.05.08