More female singers .... an acquired taste, this. Martin Carthy and Richard Thompson on guitars, the late Lal Waterson singing. I could listen to this voice till the cows come home. If you like it try "Fine Horseman" or "To Make You Stay".
And this one's in a somewhat different and much more bland style - the chilled-out Nicola Hitchcock with DJ Tiesto - an Enya for the Noughties ?
Lastly someone with a truly remarkable voice and incredible vocal range - the Dame Clara Butt de nos jours. Sounds like Gregorian chant, this. Lisa Gerrard :