Question: Tuomas Lauri Johannes Holopainen, is a Finnish songwriter, multi-instrumentalist musician (but mainly keyboardist) and record producer, best known as the founder, leader, keyboardist and songwriter of symphonic metal band Nightwish, formed in which year? 
Sentence (from "Tuomas Holopainen"): He has also studied jazz and classical styles, but prefers to be influenced by harmonic film music.
Relevant evidence: No