| Kiss | Chorus | Al『Heartland Chic』(1991.06.05 KICS-108) |
| A song of love | Vocal | Al『First in Love』(2004.10.01 AMSC-2377) |
| Baby Love Me | Background Vocals | Mini Al『Forever Yours』(2001.01.17 AMS-103) |
| Vocal | Al『island』(2000.11.22 AMSI-301) |
| vocal | Al『smile』(2003.08.27 VACM-1233) | |
| vocal, chorus | Al『Imagine』(2004.08.25 VACM-1251) | |
| vocals | Maxi『Just My Memory』(2004.08.25 VACH-1003) | |
| vocal, chorus | Al『Fredom』(2006.01.18 VACM-1276) |
| Hand of Time | Song | Al『AC+E NO2 Kim Hyung-suk's 2nd Project Album Cinema:猟奇的な彼女』(2001.07 DK-0157) |