Paul McCartney has revealed that he is working with Halo creator Bungie.
The legendary musician announced the collaboration on Twitter, declaring he is "really excited to be working on writing music with @bungie, the studio that made Halo."
Presumably McCartney is working on Destiny, the titled recently confirmed during Activision's court case with former Infinity Ward heads Jason West and Vincent Zampella.
Not much is known about the new IP, other than it will have sci-fi leanings, and that four games are planned (with the initial two titles launching first on Xbox). The first game is expected in the latter half of 2013.