Probably best known for writing and performing Rescue Me, but also for her terrific vocal work with the Art Emsemble Of Chicago and Cinematic Orchestra.

What a voice:

https://www.youtube.com/watch?v=QXSocE_M1G4
https://www.youtube.com/watch?v=oiGh6mIMVEs
http://www.youtube.com/watch?v=PppJOrnVtkg