About her voice, just watched the video of her deeper sound. I don't know much about her career, I was pretty young when she became popular and here in Mexico it took a while to be known, but, I think the music industry had something to do in that (along with her parents) but I remember there was a 'rivarly' with Christina Aguilera. B was ment to be the 'sweet one', while X was the contrast.
Also, I think Xtina was made to waste her talent, he has such a beautiful voice, but was forced into singing pop...please enlight me in the matter.