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

1995 04.26	Thrill ni Koi Shite [Kei] (VPDG-20607)	Song
1995 12.01	Kokoro de Mitsumeteru (VPDG-20634)	Song
1996 05.02	Spicy Life ()	Song
2002 04.03	Kaze no Eagle [JAM Project] (LACM-4050)	Song
2010 11.24	Best Wishes (ZMCP-5653)	Song