퍼프(Puff) 4th single [RumPumPum] 좋은 인연, 좋은 음악! 퍼프(Puff) : Just Pour Up! SINCE : ㄷ각티 듣ㄲ고 ㅇ마샤!!!ㅇ Blue.Duck : Bottoms up to our freedom [CREDITS] Composed by 퍼프(Puff), SINCE, BlueDuck Lyrics by 퍼프(Puff), SINCE, BlueDuck Arranged by 퍼프(Puff) Mixed by퍼프(Puff) Mastered by 퍼프(Puff) Artworked by Min:D210