Famous bass player and singer of the Finnish metal acts Nightwish and Tarot. Sang two 'metallized' versions of traditional Christmas songs for the compilation Raskasta Joulua and two more for compilation Raskaampaa Joulua. From Wikipedia, the free encyclopedia: Marco Hietala (born January 14, 1966 in Finland) is the bassist and second vocalist of the Finnish symphonic metal band Nightwish. He joined the band for their 2002 album Century Child, following the departure of previous bassist Sami Vänskä.