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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

              <h1>Web MIDI Starter</h1>

<button id="sendMIDIMessage">Send MIDI Message</button>
              body {
                const MIDIOutputs = [],
        MIDIInputs = [];
  // Handle incoming MIDI messages
  const handleMIDIMessage = (event) => {
    data =;
    // do more interesting things here!
  // Cycle through connected controllers and attach incoming MIDI message listener
  const onMIDIInit = (MIDIAcessObject) => {
    // iterate through all the outputs and store in an array
    for (let output of MIDIAcessObject.outputs.values()) {
      console.log(`Found output: ${}`)
    // iterate through all the inputs and store them in an array
    for (let input of MIDIAcessObject.inputs.values()) {
      console.log(`Found input: ${}`)
      // attach an event listener for incoming MIDI messages
      input.onmidimessage = handleMIDIMessage;
  // In case things fail...
  onMIDIFail= function(){
    console.log("Could not load MIDI");
  // Request access from the browser
  navigator.requestMIDIAccess({}).then( onMIDIInit, onMIDIFail );

  When the button is clicked send a MIDI C3 "noteOn" mesage to channel 1 on the first MIDI device stored in our MIDIControllers array
  document.querySelector('#sendMIDIMessage').addEventListener('click', (e) => {
    MIDIOutputs[0].send([144, 63, 127]);

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