The Flaming Lips and Mac DeMarco will embark on a co-headlining tour beginning in September and will also release a split-EP featuring each band covering songs of the other.

While the exact songs are not confirmed yet, Wayne Coyne teased some of the compilation on Instagram as he posted a video of him working up DeMarco’s Salad Days cut “Chamber of Reflection.”

DeMarco and The Flaming Lips’ tour will commence on September 17 at the St. Paul, MN.