World of Warcraft Burning Crusade - O.S.T. - World of Warcraft: The Burning Crusade (Original Soundtrack)

In 2007, the Dark Portal to Outland opened. As the demons of the Burning Legion flooded Azeroth, World of Warcraft grew bigger than ever before. In just 3 years, Blizzard's MMO had grown to dominate the genre and showed no signs of slowing down. World of Warcraft: The Burning Crusade represented the developer's most ambitious addition to the game yet, a full-blown expansion that soon became the fastest selling PC game released up to that point.