The Chainsmokers surprised their audience at Ultra on Sunday night when they brought out fellow EDM artist Illenium.

The trio did not disappoint as they took their place on the main stage performing their super secret and never-before-heard collaboration. In the unveiling aftermath the NYC-based duo and Chicago-born DJ/producer announced that they will be forming a super group named Big City Dreamin. According to the statement, all artists involved will be going on tour this fall, with more music to come!

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The Chainsmokers keep adding to their massive 2019 start as they’ve dropped multiple songs and are already slated to traverse North America with 5 Seconds of Summer and their new business with Illenium seems to be the icing on the cake. Stay tuned for Big City Dreamin tour dates as they are “coming soon,” but until then, watch Alex Pall and Drew Taggart rock Ultra below.

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