Joel Zimmerman, the vocal producer behind the deadmau5 mask and fearless leader of the mau5trap family, had quite the weekend out at Creamfields 2019. In addition to delivering a stunning set on his Cube V3 stage, Zimmerman also delivered a set under his techno alias, TESTPILOT.

During the set, Zimmerman brought out favorite mau5trap newcomer i_o for a ten minute back-to-back session, which has now been uploaded for all to enjoy. The appearance represents a pinnacle moment for i_o, who most recently released his official music video for “Ghost In the Machine,” which was co-directed by Zimmerman himself.

The two are set to take off on the road together in early September to kick off deadmau5’s official Cube V3 North American tour.