1 minute loop of simultaneously ascending and descending drone synthesized by phase vocoder from 2D modal decomposition room model, shape changing from 2:1 to 1:2 while the sources and sinks rotate a quarter turn. Low cut filter and dynamics compressed 2:1 in Audacity, made seamless via cross-fade.
I had a less than well-formed plan for #novembeat. Start recording on the 5th when I had access to instruments. And post them, ah .. sometime. Only a little delayed. 😅