| 心のかけら | BANDBEON | Al『ACOUSTIC WAVE - Japanese Special Edition』(2009.03.25 AVCD-23757/B) |
| 넌 감동이었어 | Harmonica | Al『第2集 MELODIE d' AMOUR』(2002.07 DRMCD-1875) |
| 안녕 | Harmonica | Al『第4集 다시 꿈꾸고 싶다』(2005.04 YWRCD-109) 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, Harmonica & Accordion, Chorus, Computer Programming | Al『第5集 THE BALLADS』(2006.10 SRCD-3913) |
| 우리가 사랑했다면 | Accordion & Harmonica | Al『第2集 바람의 노래를 들어라』(2008.05 SDL-0110) |