Answer
Anette Olzon was the lead singer of the Finnish symphonic metal band Nightwish for five years, from 2007 to 2012. She joined the band after the departure of previous singer Tarja Turunen and made her debut on the album "Dark Passion Play", which was a commercial success. Olzon's tenure with the band was marked by extensive touring and the release of two studio albums, "Dark Passion Play" and "Imaginaerum".