Marko Hietala, Finnish singer-songwriter, bass player, and producer

Marko Tapani "Marco" Hietala is a Finnish heavy metal vocalist, bassist and songwriter. Internationally, he is best known as the former bassist, male vocalist and secondary composer to Tuomas Holopainen, of the symphonic metal band Nightwish. He is also the vocalist and bassist as well as composer and lyricist for the heavy metal band Tarot.