Walshe has written a large number of operas and theatrical works, including “XXX_LIVE_NUDE_GIRLS!!!” an opera for Barbie dolls, and “TIME TIME TIME”, with the philosopher Timothy Morton, which the Wire described as “a sprawling opus that spans the history of the planet… like Robert Ashley meets Monty Python’s The Meaning of Life”. She has been the recipient of fellowships and prizes from the Foundation for Contemporary Arts, New York, the DAAD Berliner Künstlerprogramm, the Internationales Musikinstitut, Darmstadt and Akademie Schloss Solitude among others.
Walshe specializes in the development of voice techniques and performance elements. She combines techniques from experimental compositions, performance art, storytelling with influences from cross-media art and film. Her visual work has been exhibited in the Chelsea Art Museum, New York, Project Arts Centre, Dublin and the ICA, London.