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

1998 10.23	Yume no Naka he/S.O.S.	song
1999 06.17	Lu Puty La Puty (FSDA-010)	Song
1999 12.27	Angel Kiss (SCCD-10001)	Song
2000 03.23	Venus to Chiisana Kami-sama (PICA-007)	Song
2000 12.06	Memories Off Vol 1 Chikakute Tooi [Hizuki Ayaka] (SCDC-00051)	Song/Talk
2000 12.06	Memories Off Vol 2 Ame no Hi no Omi [Futami Shion] (SCDC-00059)	Talk
2001 06.20	Pure Blue / Love Forever (AVCA-14151)	Song
2001 07.25	Objection / Sayonara no 1/2 (AVCA-14164)	Song