Do multiple tracks work? about jsmidgen HOT 3 CLOSED

file = new midi.File();
file
  .addTrack()

    .note(0, 'c4', 32)
    .note(0, 'd4', 32)
    .note(0, 'e4', 32)
    .note(0, 'f4', 32)
    .note(0, 'g4', 32)
    .note(0, 'a4', 32)
    .note(0, 'b4', 32)
    .note(0, 'c5', 32)
    // church organ

file
    .addTrack()
    .instrument(1, 0x13)

    // by skipping the third arguments, we create a chord (C major)
    .noteOn(1, 'c4', 64)
    .noteOn(1, 'e4')
    .noteOn(1, 'g4')
    // by skipping the third arguments again, we stop all notes at once
    .noteOff(1, 'c4', 47)
    .noteOff(1, 'e4')
    .noteOff(1, 'g4')

    .noteOn(1, 'c4', 1)
    .noteOn(1, 'e4')
    .noteOn(1, 'g4')
    .noteOff(1, 'c4', 384)
    .noteOff(1, 'e4')
    .noteOff(1, 'g4');

fs.writeFileSync('test2.mid', file.toBytes(), 'binary')