HyunA (4Minute) feat. JunHyung (Beast (B2ST)) - Change
포 미닛(4minute) feat. B2ST - HUH (Hit Your Heart)
Beast/B2ST (비스트) - 4minute feat. Who's Next?
B2ST - 4minute feat. Who's Next?
Trouble Maker (HyunSeung (B2ST) & HyunA (4Minute)) - Time (Feat. 라도)
현아 (Hyuna) [4minute] - Change (feat. 용준형 of B2ST)
Kim HyunA [김현아] (4Minute) feat. Yong JunHyung [용준형] (B2ST) - Change
Kim HyunA [김현아] (4Minute) feat. Yong JunHyung [용준형] (B2ST) & G.NA [지나] - A Bitter Day
Kim HyunA [김현아] (4Minute) feat. Yong JunHyung [용준형] (B2ST) & G.NA [지나] - A Bitter Day
Yang YoSeob [양요섭] (B2ST) feat. GaYoon [허가윤] (4Minute) - What I Want To Do If I Have A Lover (G.NA Cover)