Tarja Soile Susanna Turunen-Cabuli, generally known as Tarja Turunen or simply Tarja, is a Finnish singer-songwriter. She is a soprano and has a vocal range of three octaves.
Turunen studied singing at Sibelius Academy and Hochschule für Musik Karlsruhe. She is well known as a professional classical lied singer but best known as the former lead vocalist of the Finnish symphonic metal band Nightwish, which she founded with Tuomas Holopainen and Emppu Vuorinen in 1996. Turunen was dismissed from the band on October 21, 2005 for personal reasons. She started her solo career in 2006 with the release of a Christmas album called Henkäys ikuisuudesta.