In another life I was a piano teacher. I had quit the piano at age ten, like most kids, in a fit of impatience with my elderly teacher and a disinterest in practicing. I didn’t want to play the songs from my grandparent’s childhood found in John Thompson’s Modern Course for the Piano (circa 1936), I wanted to play the second movement of Beethoven’s Pathetique. I wanted to play beautiful music. After a few years of piano-free existence, at thirteen, using the knowledge I’d accumulated from all those years of lessons, I taught myself Für Elise. It took about a year of unsteady practice, and after mastering that I moved…