[Xendarq]

I tend to listen to albums/bands rather than particular songs - a few seemed appropriate:

C'tis - Thy Serpent/'Swampsong' by Kalmah

Mictlan - 'Blood Ritual' or 'Ceremony of Opposites' by Samael (Lord Belial or Belphegor works here as well)

Ermor - 'Cause of Death' by Obituary

Marignon - Cathedral (Anathema might work)

Abysia - In Flames

Jotunheim - They Might be Giants !!!???

Caelum - 'Blizzard Beasts' by Immortal

Pangaea/Man - Pantheist/'Forest Poetry' by Ildjarn/Carpathian Forest/In the Woods