Well if I were to choose 3 songs from what I usually listen to, they would be:

Victory Song - Ensiferum
http://www.youtube.com/watch?v=fyvPe0uqjjY

Girls Go Chopping - Lordi
http://www.youtube.com/watch?v=dMzzwXcY4bE

Paljon On Koskessa Kiviä - Korpiklaani
http://www.youtube.com/watch?v=uedDNy1ERbQ