홀로 (Feat. Kim Na Young)
Jungkey
Be Forgotten (Feat.Da-Il Yang) (잊혀지다 (Feat. Da-Il Yang)
Jung Key
Anymore(부담이 돼) In Of Mamamoo(마마무)) (Feat. Whee)
Jung Key(정키)
Mama (Feat. Gu Yoon Hoe, Han Ye-Seul, 신종욱 & Kim Na Young)
Jungkey
Things I Can'T Say (Feat.Navi) (내가 할 수 없는 말 (Feat. Navi)
Jung Key
