01 허밍버드 Composed by 하현상, 손우 Lyrics by 하현상 Arranged by 구름, 하현상 Chorus by 하현상 Drum by 이지원 Keyboard by 구름 Acoustic Guitar by 하현상 Electric guitar by 구름 Violin by 신예찬 Cello by 박찬영 String Arranged by 구름 Recorded by 구름, 박정호 @Bliss Music, 하현상 Digital Editing by 박정호 @Bliss Music Mixed by 박정호 @Bliss Music Mastered by 박정호 @Bliss Music 02 Wawa Composed by 조곤, 하현상 Lyrics by 조곤, 하현상 Arranged by 오주원, 조곤, 조창현, 하현상 Chorus by 조곤, 하현상 Acoustic Guitar by 하현상, 조창현 Recorded by 오주원, 조곤, 조창현, 하현상 Digital Editing by 박정호 @Bliss Music Mixed by 곽동준, 임우석(Asst.) @small’s studio Mastered by 박정호 @Bliss Music