"Ultra to me is the definition of insanity," Zimmerman memorably scoffed during a YouTube tirade in 2011. "I hate these fucking festival things."
The Mau5 even launched another rant against UMF just last month. "Ultra is the same thing every fucking year," he bitched in an interview with Vibe, wondering: "When is it going to be played out?"
Now forget for a moment that the boys from Swedish House Mafia are ending their five-year run as a collective at Ultra 2013. Or that festival executive producer Adam Russakoff told Billboard that organizers are earnestly "bringing people in for the EDM they know and love, but exposing them to new sounds and music" by booking acts like reggae artist Snoop Lion (formerly Snoop Dogg) and rapper Azealia Banks. Because Deadmau5 is bat-shit crazy, and the potential for an electro superstar train wreck is far too serious to ignore.
From flipping out about the color of his socks to accidentally bumping into Kanye West on South Beach, anything can (and almost certainly will) piss Zimmerman off.