I am a huge fan of DK, no question. She has an evocative voice and such wonderful phasing... and she plays the piano at the same time. I have all her recordings. My pal loves Patty Barber and she is excellent, but to my ears, she is too analytical, but acknowledge that she is fabulous. Another jazz singer that I absolutely adore is Karen Souza.... her cover of "Every Breath You Take" is fabulous.
Diana Krall
I was in Fort Lauderdale last Thursday and saw/heard Diana Krall. Second time, first was in Wilkes Barre PA after Wallflower cd, this one after her recent one. Two quite different concerts, both outstanding. This one was "jazzy", an upright bass, a drummer, guitarist, fiddle/violinist (and a pianist/vocalist). 5 great musicians on the stage, and a wonderful singer. She is wonderful live. Highly recommended, as equipment reviewers often say. Worth the price of admission.