Real-Time Improvisation by David K. Barton, recorded March 21, 2019, PLATO’s Pilot House, Michiana. From 00:13 to 13:13, and from 21:22 to 34:22 of PLATO, No. 1225, “Arcanum XXI-The World, part 1”, (David, Boyd Nutting, & Tom Mondshein, with Scott Hatt, cello, 3-21-03).