Best female vocal recording on CD?


i am a sucker for great warm rich smooth female vocalists, especially on tube gear and speakers that image well. but i am almost always faced with a great voice/song but a sonically inferior recording (examples too numerous to list) or a great recording of a mediocre voice.  rickie lee jones (pop pop) comes to mind- fab recording, but come on lets be honest about her voice. however, i will almost always pick great recordings and leave the bad recordings for the car.

 so i am asking for what you use as a reference female vocal recording/track. right now i come back tp bonnie raitt "you cant make me love you" from luck of the draw.  big, warm, strong voice. not a perfect recording. but hmmmm that voice.

my only requirement is it has to be on CD. and we all know of great vinyl that did not translate into great CDs.  so help me out here, what should be my next music purchase 
meiatflask

I’ll agree that Diana Krall has become somewhat boring and passe’. But she wasn’t when she released "All For You" in ’96, imho her best album by a wide margin.

Get the XRCD-24 version of that CD and you’ll be a happy camper.

Hah. I left one out. I forgot it because it is only available on CD, and I rarely listen to CD:

Pink Martini - Sympathique

The Sandy Denny sets are also only on CD and they are great. Prefer to listen to the vinyl. 

Ive scratched the surface, but I'll let it go here because you want CD. 
Exceptional recording quality for all 3 Albums: (Hi Rez)

Melissa Menago - "Little Crimes" 
Blubell & Black Tie - "Blubell & Black Tie"
Kasia Lins - "Take my Tears"
Here's my current top 10 not in order:

Beth Orton- Pass in Time
KT Tunstall- Invisible Empire
Laura Marling- A Creature I don't know
MaMuse- Integration of the Awkward
Natalie Merchant- Paradise is there
Rachel Sage- Blue Rose
Shelby Lynn- Suit yourself & I can't imagine
Sophie Barker- A Rare Collection of songs
Vienna Teng- Warm Strangers
Ayleen O'Hanlon- Blend and spill
I have limited folk experience, but I want to second the vote for Linda Thompson.  The previous album, I Want to See the Bright Lights, is one of my favorites, mainly for her voice on several of the songs.