Armin's set was interrupted for UMFTV, not for people watching IRL.
stuff like what Deadmau5 did is why I hate him as a person. Martin Garrix is a 17 year old EDM producer who produced a worldwide smasher with Animals, that in no way justifies mocking his work to a crowd of multiple hundreds of thousands of people. The song might not have been the best song in the world, but nobody dropped Ghosts N Stuff to twinkle twinkle little star when Deadmau5 was just starting out.