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

1999 07.24	Kira Kira Melody Gakuen Ichi Gakki	Song
2000 11.30	Kira Kira [Heart Chu] (KIRA-2001)	Song
2003 06.25	Jiritsu Shinkoukei [i-chips] (CODC-2112)	Song
2003 12.25	Snow With Angels (CDR)	Song
2004 02.13	One Way Love (JOIS-0001)	Song