Closing out Ultra last night was Knife Party/Pendulum playing a live version of ‘Ghosts ‘n’ Stuff’ on the main stage. The track, originally written by Deadmau5 with vocals by Rob Swire (Knife Party/Pendulum) was performed live with Deadmau5 in his trademark mousehat and (we think!) Tom Morello on guitars for this version. Morello also played guitar over a track he’s been working on with Knife Party (song ID unknown). Check out the clips below!