Non-working (UI prototype only), but here&#x27;s something I put together a while ago to test my homegrown JS framework[1] with the intent of adding an audio engine someday:<p><a href="http:&#x2F;&#x2F;busfactor1.ca&#x2F;bin&#x2F;tracker" rel="nofollow">http:&#x2F;&#x2F;busfactor1.ca&#x2F;bin&#x2F;tracker</a><p>[1] <a href="https:&#x2F;&#x2F;www.npmjs.com&#x2F;package&#x2F;px2" rel="nofollow">https:&#x2F;&#x2F;www.npmjs.com&#x2F;package&#x2F;px2</a>