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

1996.10.23	Yume Mireba Yume mo Yume Janai	Song
1999.11.20	Get A Chance (VIDL-30464)	Song
2002.03.13	Happy! Smile! Hello! (AVCA-14309)	Song
2008.03.26	Waratte Waratte (WWCE-31156)	Song
2011.02.23	Ai ga Kaoru koroni (WWCE-31245)	Song