In reply to Kool.

A (n exceptionally gifted dramatic) female singer COULD sing in the Contralto TESSITURA, but she won't be classified as a true Contralto. Contraltos lack androgyny, i.e. they have no feminine vocal qualities. Example: Annie Lennox. Toni Braxton's voice is deeper than Mariah's, but you can tell she's a woman the higher she sings. Mimi is a Light-Lyric Coloratura Soprano---the highest voice type.