It's just a classically haunting viking song, done by a manxman. The drums are synth, there is two tracks of bass, no guitar except the solo, by Rincewind.
Lyrics
getting up early, beer for breakfast
angry body, raging blood thirst
pissing up gallons of viking booze
stirring up hatred these fucks ain't to lose
aint to lose
viking booze
marching forward nothing in sight
raging berzerkers drinking their might
people ahead believe they are cursed
this psycho's about to burst
about to burst
blood thurst
burning children without remorse
slicing old men evil is our source
raping women, nothing is more fun
destroying livestock, we have just begun
smashing skulls open
sifting through organs
pounding crowds into the ground
stacking up bodies, deceased mound
ooh pillaging villages
gathered together reminising
drinking to thor, he's the king
laughing harder with blood on our hands
embracing culture, discovered new lands
discovered new lands
blood on our hands
ooh pillaging villages
