Ableton Push

gistfile1.txt

var midi = require('midi');
var input = new midi.input();

for(var i=0; i<input.getPortCount(); i++) {
  console.log(`PORT ${i}: ${input.getPortName(i)}`);
}
----
var MidiStream = require('midi-stream');

var push = MidiStream('Ableton Push 2 User Port');
push.on('data', console.log);

push.write([144, 70, 100]);
push.write([144, 71, 101]);
push.write([144, 72, 102]);
push.write([144, 73, 103]);
--
var MidiStream = require('midi-stream');
var push = MidiStream('Ableton Push 2 User Port');

function write(data) {
  console.log('WRITE', data);
  push.write(data);
};

function play(channel, note, velocity, delay) {
  setTimeout(() => write([channel, note, velocity]), delay);
}

for(var i=0; i<128; i++) {
  for(var j=36; j<=99; j++) {
    play(j, i, (i * 100) + (j*4));
  }
}