Saxophonist Dave Rempis and drummer Frank Rosaly both came up on the Chicago jazz and improvised music scene and have worked closely together since 2001. Rosaly relocated to Amsterdam in 2016, but this double CD catches them playing live while the drummer was back in the Windy City for a fleeting visit. It's clear that jamming together for a couple of decades has given them ample opportunity to forge an easy collaborative dialect.

These are long, freeform explorations (the longest clocking in at over 32 minutes) full of fiery spurts and tactile flickers, but there's a shared and subtly understated rhythmic imperative throughout too. On ‘Patterns in Distance,’ Rosaly lays out a prickly bed of micropercussion while, at the same time, keeping an implied groove going with loose tom beats.

Later in the same piece, Rempis locks into a low, looping baritone phrase that sounds a little like one of Colin Stetson's guttural whirlpools, while Rosaly's cymbals simmer. Extra kudos for the mixing job on these discs, which places the listener right at the centre of Rosaly's kit, with tiny, precise flutters and pings firing off around the brain.