I came across this song and I felt like if the Berzerk had a theme, it would be this: http://www.youtube.com/watch?v=SFoZbTB3YMc
It does bring an interesting idea what would other Clans theme sound like. I remember when Vortex was released, there was some music played when they showed the banner from the front page (which was rather nice). And this could work for the Montanas: http://www.youtube.com/watch?v=KTjJAM2dQk8
The Urban Rivals team is made by lovers of all kind of Collectibles Cards Games and Trading Cards Games like: Magic the Gathering, Dominion, Vampire, Yu-Gi-Oh!, Pokemon, Wakfu TCG, Assassin Creed Recollection, Shadow Era, Kard Kombat and Might & Magic Duel of Champions.