So, here's a minor but interesting one: Sometime in the last few days, Japan got a PPP album. The second track looks to be a full version of the anime's opening theme (it's not quite the same version), while the first track... well, they put up a full MV for it:
Yes, that is indeed the song that plays during the concert in episode... 8. Only now we get the full version, and in live action! Although I'm not sure if that last part is a good thing...
There's also another 10 tracks, but one thing that isn't there is the ending theme.