Director: Varda Bar-Kar Logline: BIG VOICE captures a tumultuous year in the life of a visionary high school choir teacher and his students as they overcome seemingly insurmountable obstacles to become one big voice in this inspiring musical documentary. Co-producer: Marina Viscun Multiple digital airings on PBS SoCal 1: Thursday, March 28, 2019 @ 7pm PST Friday, March 29, 2019 @ 1am PST Sunday, March 31, 2019 @ 3pm PST WORLD Channel (National, all times Eastern Standard): Monday, April 1,…