What is "che-shizu"

Ché-SHIZU (シェシズ）is an underground Japanese improv/folk group consisting of Chie Mukai (向井千恵) and others. The group's sound is dominated by Mukai's vocals and er-hu playing. The group was formed in 1980, but is currently inactive. Many notable musicians from the Japanese underground have played in the group at one time or another, including Tori Kudo, Masami Tada, Masami Shinoda, Yuriko Mukojima, and Ikuro Takahashi.