Midi To Base64 Here

with open('song_package.json', 'w') as out: json.dump(song_data, out)

Decode later:

<script> const b64 = "TVRoZAAAAA..."; // your full base64 string const binary = atob(b64); const arrayBuffer = new ArrayBuffer(binary.length); const view = new Uint8Array(arrayBuffer); for (let i = 0; i < binary.length; i++) view[i] = binary.charCodeAt(i); const blob = new Blob([arrayBuffer], type: 'audio/midi' ); const url = URL.createObjectURL(blob); new Audio(url).play(); </script> import base64, json with open('melody.mid', 'rb') as f: b64_midi = base64.b64encode(f.read()).decode('ascii') midi to base64