The Vienna State Opera will live stream the April 5 performance of Manfred Trojahn’s “Orest.” The performance will be led by conductor Michael Boder with the cast including Evelyn Herlitzius, Audrey Luna, Daniel Johansson, Thomas Johannes Mayer, Thomas Ebenstein, and Laura Aikin. The stream kicks off at 7:30 p.m. local time and is slated to run until around 8:45 p.m. {…}