Often performing together as a duo after their initial 2004 Chicago Tentet encounter, drummer/percussionist Paal Nilssen and multi-reedist Peter Brötzmann typically released albums of live performances, this 2015 studio date in Antwerp unique in their catalog, an exemplary set of recordings, particularly with Brötzmann on a new contra-alto clarinet and Paal adding gongs to their improvisations.