Who are your three favorite female singers?


I have favorites, but would like to hear from others.  Thanks
whatjd
Lots of fantastic ones, many mentioned here, but the first three that popped into my head are:
Joni Mitchell
Billie Holiday
Janis Joplin
The longer I think about it the harder it is to decide on just top 3.
In no particular order:-
Dame Janet Baker
Lorraine Hunt Lieberson
Eva Cassidy/Alison Krauss