Favorite Female Vocalists Of (Un)Popular Music

I would like to say favorites of popular music but only a handful of them are commonly known by the mainstream. The astute music lover has a much better perspective anyway, so let's hear it for the unpopular artists! This list focuses on the vocal qualities, the appeal of the voice rather than the music. A 'favorite bands' list would contain many of the same names but in a much different order. I consider each selection represents an excellent exhibition of their talent, and for variety strove to select deeper cuts rather than hits.