Passage: Nightwish performs symphonic metal with soaring female operatic vocals. Their music has been described as "bombastic heavy, symphonic and cinematic, with keyboards and strings creating a gothic atmosphere". They have also been known to play power metal, folk metal and gothic metal.The band's music is also known to be complex and layered. Their approach is epic, theatrical and operatic. Critic Chad Bowar notes that the music is "always very melodic with memorable choruses and a lot of hooks."

Question: Nightwish as what kind of vocals?
female operatic vocals