Produced by 주영훈 All Instruments Programmed by 유상균 String Arranged & Played by 구희상 Guitar 구희상 Rap Making & Performed by 덕배 Background Vocal 김현아 Recording Engineer 최자연 @W Sound Studio, 정재원 @Studio89 Mixing Engineer 조준성 @W Sound Studio Mastering JFS Mastering