I Taught a Browser to Play Piano — Here's How It Figures Out Which Finger Goes Where

Learning piano is hard enough without guessing which finger hits which key. Most sheet music doesn't bother telling you, and when it does, the fingering is often generic or just plain wrong for your hand size. I got tired of that, so I built a tool that reads a MusicXML score, runs a full physics-and-biomechanics simulation in your browser, and shows you exactly how your hands should move across the keys. No servers. No uploads. Just drop a .xml or .mxl file into the page and watch your browser