Although she's different, stylistically, the tone of her voice reminds me of Tina Arena:
Hil St Soul
Corinne Bailey Ray
I don't think Kyra is there yet, but might be one to keep an eye out, as her artistry matures:
Mattanja Joy Bradley:
@Mython - thanks for this one. Here's something in return ....
Free (gratis) flac download Karma Bonita - featuring her on vocals ..... http://karmabonita.bandcamp.com/album/one
Victoria Legrand (Beach House)