A couple more:
Carrie Tree, Sharron Kraus (my favourite singer of the last few years, particularly sombre windswept stuff), Morito Doji, Fit & Limo (particularly awesome), Kayno Yesno Slonce, The Magic Carpathians Project, Floating Flower (definitely from another world), The Iditarod, Atman (like Kayno Yesno, Fit&Limo, and the Carpathians, European and a long way from being precious traditionalists).
And of course, Comus.