F-VE DOLLS (5Dolls) KOREAN SPEED (스피드) Sung Yoo Jin (성유진) T-ARA (티아라) Taewoon (우태운) THE SEEYA (더 씨야)
Soyeon (T-ARA), Yoojin (The SEEYA), Eunkyo (5Dolls), Sungmin, & Taewoon (SPEED) – Painkiller (진통제)
진통제 jintongje “Painkiller” [Single] Tears Of Mind 2013.06.10 Soyeon, Yoojin, Eunkyo, Taewoon, Sungmin Lyrics/작사: 이단옆차기 Composer/작곡: 조영수, 이단옆차기 Arranger/편곡: 이단옆차기