Yo-Yo Ma Makes His Encore a Call for Peace, With a Nod to Casals. Classical Music, Spanish Civil War (1936-39), Cellos, Catalonia (Spain), Ukraine, Casals, Pablo, Ma, Yo-Yo, New York Philharmonic, Geffen, David, Hall (Manhattan, NY), Russian Invasion of Ukraine (2022), audio-neutral-informative, audio-neutral-immersive