Question: What nationality is the bassist who joined Nightwish in 2002?
Related documents: [0]  [DOC] Tarot is a heavy metal band from Finland. They are most famous for the song “Wings of Darkness” from the 1986 album "Spell of Iron". While having enjoyed a broad underground popularity in Finland, the band has never been very famous elsewhere until gaining new success in recent years when their singer and bassist Marco Hietala joined Nightwish in 2002. [END] 
[1]  [DOC] Marko Tapani "Marco" Hietala (born 14 January 1966) is a Finnish heavy metal vocalist, bass guitarist and songwriter. Internationally, he is most known as the current bass guitarist, 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. [END] 
Answer: 
Finnish
Finnish