that uses deep convolutional
    neural networks to perform music inpaintings through Gibbs sampling.
    In the demo below, we call <code>infill()</code> to create Bach-style
    4-part harmonies with the provided input, and display the result.
  </p>

  <h2>Infilling the first voice</h2>
  <p>The default behaviour of the model is to infill all of the "silence"
    in a NoteSequence. In this example, only the first voice (Soprano) is present
    for all the time steps, so Coconet will infill the other 3 vo