Most likely one audio track from one particularly good capture, then lots of video clips from other uploads edited together. But still very very nice :D
HOW THE HELL DID YOU DO THIS?! All these close-up shootings... just... HOW? Camera fixed directly above Matt... Are you spy? Stealth assassin using your skills to shoot Muse gigs? Did you secretly enter the Arena before the gig and fix your cameras while nobody can see you?.. Hitman-cameraman... :D Or are you just working in Muse shooting team and they let you make your oun recordings?