Verified answer

Don't know much about the genre, but I couldn't help getting mesmerized by

Sammet's AVANTASIA project, Mystery of Time album, SPECTERS

http://www.youtube.com/watch?v=eUYb66diIEk

Fate of Norns by Amon Amarth

http://www.youtube.com/watch?v=vKTn2sVMDhw

Hmmmmm...

I would say "Funeral Spring" by Sentenced http://www.youtube.com/watch?v=k21drOjaABk

Through the Fire and Flames - Dragonforce c:

Only one-slipknot