(born 1941. in Schaffhausen, Switzerland)

She is a notable Swiss jazz and free improvising pianist.

She has performed and recorded numerous solo piano performances as well as performing as part of the Feminist Improvising Group, whose members include Lindsay Cooper, Maggie Nichols, Georgie Born and Sally Potter.

She has also performed a series of duos with drummers Pierre Favre, Louis Moholo, Andrew Cyrille, Günter Sommer, Han Bennink, Hamid Drake, as well as in trio and quartet sessions with others, including Evan Parker or Peter Kowald.

One of her most enduring collaborations is with the improvising musician Rüdiger Carl.

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