I think she is played to make stereos sound their best, same as Diana Krall. Although Diana is a looker - Elvis got a winner.
For women singers, Linda Ronstadt, Stevie Nicks, Bonnie Raitt, Sade are tops in my book. If you want a Nora Jones type sound, check out Linda Ronstadt's What's New. A little mellow for my tastes, but what a voice. A regret I have is I never got to see her live. It's a shame she's been too sick to perform for quite a while.