MasterClass (마스터 클래스) [Gain] Produced by MasterClass Composed by MasterClass Arranged by MasterClass E.Piano - MasterClass A.Piano - MasterClass Organ - MasterClass Synthesizer - MasterClass Bass - MasterClass E.Guitar - UseMind Drum - MasterClass Trumpet - MasterClass Trombone - MasterClass Scratch – MasterClass ALBUM COVER FILM STAFF Photography - Roberto Alcaraz SOUND ENGINEER Recorded & Mixed by Theophilus at NoiseSymphony Studio Assisted by J.C, James, Mark Mastered by Paulus at The NoiseSymphony Recording Co-ordinated by Simeon MASTERCLASS.CO.KR NoiseSymphony Production.