Real-Time Improvisation by David K. Barton, recorded November 6, 2018, PLATO’s Pilot House, Michiana. From 00:01 to 13:01, and from 13:01 to 26:01 of PLATO, No. 1837, “Acoustic Shadows”, (David, Omar Cherry, Jesse Harms, Matt Mitchell, & Mike Ponder, 11-06-2009).