Uncaught Error: buffer is either not set or not loaded
ti https://unpkg.com/tone@14.7.77:1
start https://unpkg.com/tone@14.7.77:21
triggerAttack https://unpkg.com/tone@14.7.77:21
triggerAttack https://unpkg.com/tone@14.7.77:21
processPianoState https://kevinzakka.github.io/robopianist-demo/examples/main.js:174
render https://kevinzakka.github.io/robopianist-demo/examples/main.js:255
onAnimationFrame https://kevinzakka.github.io/robopianist-demo/node_modules/three/build/three.module.js:27951
onAnimationFrame https://kevinzakka.github.io/robopianist-demo/node_modules/three/build/three.module.js:12661
Indeed, browsers are pretty aggressive about not autoplaying sound, you need to interact with the screen (mouse click or finger tap + make sure your sound is up / ringer not on silent).