In reply to coolness.

Are you joking???? No, Brandy has not conquered the world by just standing there and singing since most of the world don´t remember her to begin with. and then Beyonce... lol Please. She knows she can not stand tehre and just sing a ballad. Only tried it with that generic song called Listen and didn´t work.
Whitney, Celine and Mariah were on another level. They had something nodody else has had after them.
Adele is the only one doing it since then (although she is not on the same level).