Oud (an Arabic kink-necked lute) and bass clarinet, a little percussion, some bass ...
It doesn't sound very complex at first, but the artists' embellishments and improvisations weave the whole thing into a tapestry of sound that allows the transitions between the melodies and instruments to flow into one another.
Nevertheless, the whole thing does not become diffuse, blurred or even washed out or mushy. The AH-D9200s manage to maintain the contours with absolute precision and thus reproduce a circular complexity on a scale that one would not think possible with this instrumentation.
It's actually just an oud, bass clarinet, a little percussion, some bass ...