| to be Lover | prog. and all instruments | Maxi『to be Lover』(1999.11.26 PHCL-11016) Al『Kirariddim』(2000.06.21 PHCL-5150) |
| NATSU・UMI・SAKANA | keyboards and program | Al『Kirariddim』(2000.06.21 PHCL-5150) |
| I will take you | Piano & Organ | Maxi『いつか二人で/I will take you』(2006.08.23 AVCD-16108/B) |
| 未来の扉 | Programming & Turn Table | Al『ファーストタイム』(1998.07.08 EPCE-5002) |