Casualties of Warcraft - Malygos (http://www.wowprogress.com/guild/us/malygos/Casualties+of+Warcraft) kills Ragnaros 10 on September 12, 2011.

DISCLAIMER: I did not make nor do I own the rights to the music. Go buy the music if you enjoy it.
Music:
Ke$ha - We R Who We R http://itunes.apple.com/us/album/we-r-who-we-r-single/id398439652
Dream Theater - Panic Attack http://itunes.apple.com/us/album/octavarium/id65615441
Katy Perry - Firework http://itunes.apple.com/us/album/teenage-dream-deluxe-edition/id387712061

Logs: http://worldoflogs.com/reports/rt-0qftf3tx3nd0ic3n/dashboard/?s=4841&e=5427

Casualties of Warcraft: http://www.facebook.com/groups/165322553539908/