거울 속에 비친 그 사람이 세상에서 제일 아름다운 사람이다. CREDIT Producer SIM2 1. Intro Composed by SIM2, itssiu Arranged by SIM2, itssiu Piano by itssiu 2. Black In The Mirror Lyrics by itssiu Composed by SIM2, itssiu, HS Arranged by SIM2, HS Main vocal by itssiu Background vocal by itssiu Guitar by HS Piano by SIM2 Bass, Drum by SIM2 3. Sad Ending Lyrics by itssiu Composed by SIM2, itssiu Arranged by SIM2 Main vocal by itssiu Background vocal by itssiu Piano by SIM2 Bass, Drum by SIM2 4. What Happened? Lyrics by itssiu Composed by SIM2, itssiu, HS Arranged by SIM2, HS Main vocal by itssiu Background vocal by itssiu Guitar by HS Piano by SIM2 Bass, Drum by SIM2