Hyorin & Soyou (SISTAR) - Hurt (Christina Aguilera cover)
Soyou & Hyorin (소유 & 효린 of SISTAR) (Hyolyn) - 꽃이 핀다 (Growing)
Soyou & Hyorin (소유 & 효린 of SISTAR) (Hyolyn) - 꽃이 핀다 (Growing) (K.Will cover)