Produced by 서정후 Lyrics by 장진선 Composed by 장진선 Vocal 장진선 Synth & Keyboard 서정후 Bass 홍요셉 Drum 이형의 E.Guitar 박만성 Chours 유지현 Arranged by 서정후 Music Directed by 서정후 Vocal Directed by 서정후 Programming 서정후 Recording studio JG studio/ CHANSHIM studio Recording & Mix Engineered by 서정후 / 박유림 Mastering Engineered by 박유림 photograph 서영석 Jaket designed Rachel J.