Marko "Marco" Tapani Hietala is the vocalist, bassist and songwriter of the Finnish heavy metal band Tarot and bassist and the male vocalist of the Finnish symphonic metal band Nightwish and is easily noticed for his unusual facial hair. He joined the band for their 2002 album "Century Child", following the departure of previous bassist Sami Vänskä. Marco plays in Impaled Nazarene on album "Suomi Finland Perkele" (1994). Wikipedia
The definitive Wikipedia entry for Marco Hietala. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Marco_Hietala