[Firefly]는 밤에 밝게 빛나는 반딧불이에 비유하여 밤에 빛이 나고 활동적인 모습을 표현한 앨범이다. [Credit] 1. 생각보다 너는 훨씬 빛이나 (feat.김승민) Lyrics by Puer,김승민 Composed by Puer,HOWOW Arranged by HOWOW Drum by HOWOW Bass by HOWOW Synthesized by HOWOW MIDI Programing by HOWOW 2.Firefly Lyrics by Puer Composed by Puer,HOWOW Arranged by HOWOW Drum by HOWOW Bass by HOWOW Synthesized by HOWOW MIDI Programing by HOWOW 3.Love, Crush (feat.Blueday) Lyrics by Puer,Blueday Composed by Puer,HOWOW Arranged by HOWOW Piano by 김경민 String by HOWOW Bass by HOWOW Drum by HOWOW Percussion by HOWOW Synthesized by HOWOW MIDI Programing by HOWOW 4.런닝머신! (feat.TimeFeveR) Lyrics by Puer,TimeFeveR Composed by Puer,Kukyo icey Arranged by Kukyo icey 5.네 머리위에서 바운스 Lyrics by Puer Composed by Puer,TWONTWON Arranged by TWONTWON All Mix&Master by TimeFeveR Art by DAVI