In the age of hyper-connectivity and multi-tasking, staying focused during a two or three hour classical music performance can feel like a workout. At a Kennedy Center concert in Washington, DC last week, I sat next to a woman who popped some gummy vitamins as Russian virtuoso Daniil Trifonov played a blistering passage from Stravinsky’s Russian Dance. As the celebrated pianist tackled a rousing Shostakovich fugue a few minutes later, she again reached under her