Board Thread:Warhammer 40k General Discussion/@comment-6767898-20130409140103/@comment-8257990-20130502223339

Although this was a good choice of music it is actually quite hard to pinpoint a theme for chaos... Due to the absolutely massive diversity among them

However you could put their specific theme styles into the four (five if you can find Malal related songs) dark gods e.g. Tzeentch's theme would almost be mystical like the eldar but very dark and twisted