Question: Are Masatoshi Ono and Anette Olzon both singers ?
Sentence (from "Anette Olzon"): Anette Ingegerd Olsson (born 21 June 1971), known by the stage name Anette Olzon, is a Swedish singer, best known as the lead vocalist of Finnish symphonic metal band Nightwish from 2007 to 2012.
Relevant evidence: Yes