Yesterday at work I was talking to a friend of mine about Blizzcon. He's attended for a few years and we talked about the fact that Blink-182 is performing there this year. In the past, Blizzard's gotten Foo Fighters and Ozzy Osborne to appear at Blizzcon, and before that they always had performances by one of their in-house bands, L90ETC (formerly L85ETC, L80ETC, etc.).
I mentioned that it seemed interesting to me that Blizzcon went for some very mainstream rock acts for entertainment at the event rather than showcasing game bands; to me, music from the featured acts felt a little incongruous with what I think of when I think about WoW and Diablo music; maybe they fit with Starcraft more, but the vibe I got from SC2 (from what little I've played of it) was more of a space-western.
I get was Blizzard is doing, in that they just want people to have a good time, but this led me to another question: is there a music scene that exists around Blizzard games?
Years ago, when Harry Potter was at the very height of popularity, there was a small music scene that grew out of that fandom oriented around "Wizard Rock" which was basically just rock music with Harry Potter oriented lyrics. They referenced the books and movies and borrowed their style from the characters.
There are also a lot of Mega Man cover bands. Sure they hit other games sometimes, but they also do original music and sing songs ABOUT Mega Man too.
So is there a music scene around Blizzard games that I don't know about? What about other series? Is there a Castlevania band scene? Final Fantasy? What is it about certain media properties that inspires these small niche music scenes?