Conversation so far:
What can you tell me about Celines Voice?
Dion possesses a three-octave range, from B2 to E6.
Dion once stated that she is a mezzo-soprano.
How did she train her voice?
CANNOTANSWER.
Does she have a unique voice?
Her self-titled album was promoted with the slogan "Remember the name because you'll never forget the voice..

Question: What about her timbre?
Self-contained rewrite: What about Celine Dion's timbre?