Saw this come through on twitter:
http://www.shacknews.com/article/91...l-add-weezer-concert-set-from-later-this-week
"Tomorrow, it's Activision and FreeStyleGames' turn to rock out with the release of Guitar Hero Live. Activision is looking to launch the game in grand fashion with a special concert set to take place tonight, headlined by Weezer, Rival Sons, and Grizfolk. But as long as Weezer's hanging around in the neighborhood, it looks like FreeStyle will be borrowing them for some future in-game content.
A second concert will take place tomorrow at the iHeartRadio Theater in Los Angeles, in which Weezer will perform tracks off their new album. These performances will be filmed and added to the GHTV section of Guitar Hero Live as a playable music set. It should operate similar to the Avenged Sevenfold content, in that the performance should be unlockable via in-game currency."