was a Japanese singer-songwriter who specialized in the shamisen. Her real name was .
Momoyama began learning to play the shamisen at the age of six. In 1961, with the support of her father, , a researcher of ryà «kà Âka and historical Japanese music, she established the of shamisen-playing and became an iemoto.
Two years later, in 1963, Momoyama was introduced to the style of jà Âruri and came to be one of the few students of its then-final master Miyazono Senju IV. In 1974, she retired as iemoto of the Momoyama school and became the last disciple of , an authority on the of the Meiji and Taishà  eras.
In 1981, Momoyama began a project attempting to resurrect the Ryà Âjin Hishà Â, a collection of songs from the Heian period. This came to occupy the greater part of the remainder of her life. While touring in Europe, she met the percussionist Tsuchitori Toshiyuki. The two would go on to found the record label in 1987. Later, the two collaborated with other artists, including à Âno Kazuo.
She died of breast cancer at a hospital on December 5, 2008, in Nisshin, Aichi. She was 69 years old. After her death, Tsuchitori continued to publicize her music.