Ryoko Moriyama (森山 良子 Moriyama Ryōko), (born January 18, 1948) is a Japanese folk and jazz singer. Her father is Hisashi Moriyama, a pioneer of Japanese jazz. Her son Naotaro Moriyama is a singer. Her first cousin Hiroshi Kamayatsu is also a musician.
http://en.wikipedia.org/wiki/Ryoko_Moriyama