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

1998 11.21	Wasurenai Kisetsu -Dreamin Tomorrow- (VICL-35040)	Song
1999 11.03	Ai (Chuuseishin) [Excel Girls]	Song
2008 10.29	Kemeko Deluxe! (GNCA-0126)	Song
2009 06.10	Honjitsu Mankai Watashi-iro! (GNCA-0137)	Song
2009 10.23	Queen's Blade Character Song Nowa (ZMCZ-4628)	Song/Talk