주효 – Juliet
Track 01 from Single "Juliet"
Release Date: 2019.02.28
주효 – Dreamer’s Dream
Track 01 from Single "Dreamer’s Dream"
Release Date: 2019.11.06
주효 – Summer Last Forever
Track 01 from Single "Summer Last Forever"
Release Date: 2019.06.02
주효 – Broken Windows
Track 01 from Single "Broken Windows"
Release Date: 2019.10.07
주효 – Brooklyn
Track 01 from Single "Brooklyn"
Release Date: 2019.03.31
주효 – Monster
Track 01 from Single "Monster"
Release Date: 2019.06.30
주효 – Northern Light
Track 01 from Single "Northern Light"
Release Date: 2019.01.31
주효, 핫펠트 (HA:TFELT) – There Must Be
Track 01 from Single "There Must Be"
Release Date: 2015.02.25