This project demonstrates writing music in Javascript. In the beginning I used NodeJS with MIDI to control a synth, and then got into 4klang which is a very compact but extremely powerful synth, which finally inspired me to atttempt writing a synth in WebAssembly running entirely in the browser.
This is a live-coding environment for music running entirely in the browser, synthesizing music in webassembly using AssemblyScript.
You can test it yourself here (remove the gist url parameter if you want a clean project ):
https://petersalomonsen.com/webassemblymusic/livecodev2/?gist=5b795090ead4f192e7f5ee5dcdd17392
Demo videos: https://www.youtube.com/watch?v=C8j_ieOm4vE&list=PLv5wm4YuO4IxRDu1k8fSBVuUlULA8CRa7
Sources are in the wasmaudioworklet folder.
There are also more resources like articles and earlier versions at https://petersalomonsen.com
My experiments with the 4klang synth can be found int the 4klang folder.
If you just want to listen to the songs: https://soundcloud.com/psalomo/4klang-lazy-grooves https://soundcloud.com/psalomo/4klang-first-attempt
You may check out the windows exe of the "first attempt" song (link to zip with exe found in video description):
https://www.youtube.com/watch?v=zHrbLSjKmxQ
My first attempt on writing music with Javascript used NodeJS with MIDI routed to ZynAddSubFX for the sounds
And you can listen to the song songs/upbeat.js here: https://soundcloud.com/psalomo/80s-nostalgica
Run directly from nodejs, only dependes on the node midi package, and connect to a midi device.