| 선인장 | Piano | Al『第2集 MELODIE d' AMOUR』(2002.07 DRMCD-1875) |
| 우린 제법 잘 어울려요 | Piano | Al『第2集 MELODIE d' AMOUR』(2002.07 DRMCD-1875) |
| Keyboard, Computer Programmer | Al『第3集 DOUBLE LIFE; THE OTHER SIDE』(2003.10 YWRCD-082) |
| First Date | キーボード | Al『第3集 DOUBLE LIFE; THE OTHER SIDE』(2003.10 YWRCD-082)
Al『季節が戻ってくるように～The Best of SUNG SI KYUNG』(2006.11.22 BVCM-31207) |
| Piano & Keyboard, Computer Programming | Al『第5集 THE BALLADS』(2006.10 SRCD-3913) |
| 잃어버린 것들 | Conducted | Al『第6集 여기, 내 맘속에...』(2008.06 SDL-0124) |
| 그대와 춤을 | Conducted | Al『第6集 여기, 내 맘속에...』(2008.06 SDL-0124) |
| 눈부신 고백 | Piano, Keyboard, Conducted | Al『第6集 여기, 내 맘속에...』(2008.06 SDL-0124) |