Mad Clown feat. Hyorin Of Sistar - Soul Child
Mad Clown (매드클라운) Feat. Hyorin (효린 of SISTAR) (Hyolyn) - 견딜만해 (Without You)
Hyorin (효린 of SISTAR) (Hyolyn) Feat. Mad Clown (매드클라운) - 스토커 (Stalker)