If you like Norah Jones . . . . Check this artist out.
Not new but new to me is Patricia Barber.
Patricia Barber has a powerful voice and super unique range. It is one of the few female vocal artists I have in my collection. She has a lot of stuff if you like a three to four piece jazz nightclub sound.
Not neccessarily crank it up music. Simply rich in dynamic sound and purity.
Let me know what you think and I will find you more.