sitzprobe
n.— «The sitzprobe—the German word originally came into musical theater from the world of opera and literally means “sitting trial”—is actually the rehearsal at which cast and musicians assemble to play through a score for the first time and hear the combined results of their separate endeavors.» —“No Greasepaint, Just the Roar of the Cast” by Jesse Green New York Times Feb. 27, 2005. (source: Double-Tongued Dictionary)