Conversation so far:
What can you tell me about Tarja Turunen's legacy?
Tarja Turunen's voice is described by critics as remarkably powerful and emotional.
What else is said about Tarja Turunen's voice aside from being described by critics as remarkably powerful and emotional?
Sometimes it is stated that Tarja Turunen's voice is too trained or operatic for metal music

Question: What type of style did she have?
Self-contained rewrite: What type of style did Tarja Turunen have?