This song is about the HL2 mod Pirates, Vikings and Knights II and actually consists of nothing but samples from the mod. For a free mod the voice acting is really awesome and contains a lot of funny lines. That eventually made me create this song.
Also, a great thanks goes to the team behind PVK2. Without them this song wouldn't exist, so be sure to check them out and play their mod here.
You can also get a high definition version of the cover art here.