Returning this Halloween on Saturday, October 31 and Sunday, November 1 at Southern California’s Fairplex, the two-day 21+ festival will present headlining performances from: deadmau5, Hot Chip, Nero, Flying Lotus and Future onOctober 31 and Skrillex, Gesaffelstein, Glass Animals and A$ap Ferg on November 1. Check out the official trailer above.