What makes Hexensabbat by Irène Schweizer notable?

This album is significant for its bold exploration of free improvisation, contributing to the broader free jazz movement of the late 1970s. 'Hexensabbat' received critical acclaim for its innovative approach and influenced subsequent generations of improvisational artists. It has been noted as a landmark release that helped define the parameters of women's contributions to jazz. By the time 'Hexensabbat' was released in 1978, Irène Schweizer had established herself as a prominent figure in the Swiss free jazz scene. This album followed her earlier works, showcasing her evolution as a musician committed to improvisation and experimentation. At this point, she was also gaining recognition internationally, particularly for her collaborations with various avant-garde musicians.