Object Piece is a radio drama recorded in a dried out lake bed in 1978. It's visceral and compelling, with incredible acting, and it was made by Erik Bauersfeld, one of the great audio dramatists of the late 20th century. First we'll hear the story, then we'll learn more about where it came from and how it was made. We'll talk to Randy Thom, whose 50-year career in film sound began with a job…