In my opinion I beleive Joss Stone's voice is very overrated I went to a festival and I saw how she started losing her voice around the middle of the concert but her background singers I believe have better and more superior vocals they hit and hold notes more than she can and they are doing background.

Look at this video and see for yourself

Do you beleive her background singers have superior voices and should go solo.

http://www.youtube.com/wa...L_Yhyg0SJE