Age of Oppression and Age of Aggression are the same song, with different lyrics. AoO has lyrics that support the Stormcloaks, while AoA favours the Empire. The lyrics posted are for Age of Oppression.

We ^Dmdrink to our ^A#youth, to the ^Cdays come and ^Gmgone. For the ^A#age of o^Gmppression is ^Anow nearly ^Dmdone. We'll ^Dmdrive out the ^A#Empire from this ^Cland that we ^Gmown. With our ^A#blood and our s^Gmteel we will ^Atake back our ^Dmhome.

^FAll hail to Ulfric! You ^Care the High King! ^DmIn your great honor we ^Adrink and we sing. We're the ^Dmchildren of ^A#Skyrim, and we ^Cfight all our ^Gmlives. And when S^A#ovngarde ^Gmbeckons, every ^Aone of us ^Dmdies!

But ^Cthis land is ours and we'll ^Gmsee it wiped clean. Of the s^A#courge that has ^Gmsullied our ^Ahopes and our ^Dmdreams.

(The last two lines aren't in the song, but it's better this way)

Misc Computer Games - Skyrim - age of oppression age of aggression