Zz……. Composed by: Ji Soo Park (Chapter M) Lyrics by: Ji Soo Park (Chapter M) Arranged by: Ji Soo Park (Chapter M) Executive Producer: Ji Soo Park (Chapter M) Piano by: Ji Soo Park (Chapter M) EP by: Ji Soo Park (Chapter M) Synthesizer by: Ji Soo Park (Chapter M) Guitar by: Ji Soo Park (Chapter M) Chorus by: Ji Soo Park (Chapter M) Programming by: Ji Soo Park (Chapter M) Recorded by Ji Soo Park @ Chapter M Studio Mixed by Ji Soo Park @ Chapter M Studio Mastered by Ji Soo Park @ Chapter M Studio