오켓 – 소원 (Wish) (Feat. 김민정)
Track 05 from EP "Overture To Ohcat"
Release Date: 2012.07.20
오켓 – 비행 (Fly Away) (Feat. Crissie)
Track 03 from EP "Overture To Ohcat"
Release Date: 2012.07.20
오켓 – 위로 (Comfort) (Feat. 주리)
Track 04 from Album "Concerto For Ohcat"
Release Date: 2014.07.01