Putin’s Maestro, and the Limits of Cultural Exchange in Wartime. Russian Invasion of Ukraine (2022), Classical Music, Music, Opera, Metropolitan Opera, Munich Philharmonic, Zurich Opera, Gergiev, Valery, Netrebko, Anna, Gelb, Peter, Homoki, Andreas, Levit, Igor, Putin, Vladimir V, Europe, audio-neutral-informative, audio-neutral-immersive