What are your top 3 favorite female singers?

I'm pleasantly surprised to see Mary Stallings mentioned twice already! She is also one of my favorites, but I thought that she was a bit 'under the radar'.

Hard to confine it to three, of course, but I'll work around that with my three favorite lesser known singers:

Kristin Asbjornsen

Lisa Bassenge

Rokia Traore

Well, since we're two pages in and nobody has mentioned either of these two, I feel compelled to do so:

Cécile McLorin Salvant (Woman Child)

Karrin Allyson (In Blue)