<!DOCTYPE HTML> <html> <head> <meta charset="utf-8" /> <title>Simple HTML</title> <meta name="viewport" content="width=device-width, initial-scale=1" /> <!-- LOAD Tone.js from unpkg --> <script src="http://unpkg.com/tone"></script> <script> function playNote() { // create a synth var synth = new Tone.Synth().toDestination(); // play a note from that synth synth.triggerAttackRelease("C4", "8n"); } </script> </head> <body> <h1>Simple HTML5 Tone.js Demo</h1> <button onclick="playNote()">Click me to play note!</button> </body> </html>