Jung Key - 나는 잘 지내 (I'm well) (Feat. Jung Seung Hwan)
Jung Key - 여전해 (Same) (Feat. IM SE JUN)
Jung Key - 첫사랑 (First Love) (Feat. Yuju Of GFRIEND)
Jung Key - Only You (Feat. U Sung Eun)
Jung Key - 부담이 돼 (Anymore) (Feat. Whee In of Mamamoo)
Jung Key - 오늘도 (Today) (Feat. DOKO)
Jung Key - I Don't Want (feat. Sojung of LADIES' CODE)
Jung Key - 스치는 (feat. Baek Ji Woong)