If you were feeling a little let down with Muse as a Lollapalooza / Kaaboo headliner given they have no new material since Drones you are in luck. Muse frontman Matt Bellamy tweeted tonight that Muse is back in the studio and will release a new song soon. What does soon mean? Who knows but it's hard to imagine it won't be out for their headlining dates of Kaaboo or Lollapalooza this summer. Muse is new to Kaaboo, but has headlined Lollapalooza as recently as 2011. At least it appears they will be showing off some new music at both festivals this summer.