There’s choreography in classical piano that can seem a little childish. When a player starts and stops a note, the way they move their arm/torso around the finger has a small, perceptible impact on the note’s quality and timbre. I played piano for years – I stopped when I was eighteen – and I always thought sighing into the keyboard (or whatever) was silly. Not only was I dead wrong, but immature about it, too. Part of the joy of Seymour: An Introduction, the new documentary directed by Ethan Hawke, is that goes deep into the virtue of practice, and how it intertwines with talent. Many documentaries are about creative people; this is one of the few that is also about creativity.