Ai appears (sings/talks) in the following CD singles.

1999 03.21	Heartful Candy (DHC-2)	Song
1999 07.24	Kira Kira Melody Gakuen Ichi Gakki	Song
2000 10.25	LOVE is the BEAT (BZCM-7002)	Song
2003 11.21	Orange Planet (FUJI-8)	Song