Who're the top female vocalists across all space and time?

Mine:
1. Karen Carpenter
2. Siouxsie Sioux
3. Stevie Nicks
4. Chrissie Hynde
5. Annie Lennox

Others to note: Karen O., Shirley Mansun, Kate Bush, Billie Holiday, Cocteau Twins chick, Debbie Harry, Lisa Stansfield, Aretha Franklin, Whitney Houston.

PS I only own records by two in my top five, but that doesn't mean I can't appreciate a great voice when I hear it.