I am working on a project related to vintage web designs. I would like to embed and autoplay a midi file but:
Browsers dropped support for playing MIDI files natively over time. You might want to try MIDI.js, a JavaScript based cross browser library.
Add the MIDI.js script to your webpage:
And then add a link to start playing:
Play My Song
Take a look at http://www.midijs.net for details.