Yamaguchi Kappei CDs (solo)
Kappei has released the following solo CDs.
| 1990.10.24 | Rollin (TYDY-5147) | Song |
| 1991.12.18 | Kappei -Ai wo Tadotte- (TYCY-5185) | Song |
| 1996.07.20 | Unbalance City (COCC-13586) | Song |