Recommend great bands that have female lead singer

I should also mention Jaime Page's DARK UNIVERSE, with Donna Greene on vocals ... kinda like a prog metal version of HEART. Spectacular music from Western Australia 

They are both also able to pull off a 'soaring' style of singing, that is very beautiful.
 

I would put it this way.  IF Annie sang Sheep-Crook and the Black Dog, she would try to get close to that kind of phrasing.  That is, if I plotted all the styles Annie can sing as a Venn diagram, the Steeleye Span style would be a subset within it.  Then you have something like Quiet Nights and Quiet Stars which is completely different. 

And then, you listen to the title track of Camera Camera and that's like Kate Bush, pretty much.  Very head voice-y tone up in the fifth octave throughout (Annie normally likes to build a solid chest base in the fourth octave to then launch up into a soaring fifth/sixth octave note).

Tone wise too, Annie's voice is a bit lower and heavier too, richer too;  Maddy has a lighter and more high pitched voice.  She uses her impeccable control to mask it a lot of times (except in a song like Touching Once where she's actually using all that vocal weight).  

Of all the other folk rock/prog contemporaries of Annie, I thought Jacqui McShee of Pentangle was the one who sounded most like Annie (or rather, Annie sounded like her).  Again, Annie's well trained voice combined with her not being overly beholden to one niche meant she covered a very wide spectrum unlike these folk specialists who of course sounded fabulous in their niche. 

I remember that group!!!  Or precisely that singer if not any particular songs or albums.. 

oh yeah.. I had the hots for her back in the day...