title: Combining samples quickly in tone.js (or another framework)
body: <p>I need to programatically combine a bunch of music tracks in a sequence, one after the other, with some overlap between them, based on some rules.</p>
  <p>I was looking at tone.js today which is great, and I've just about managed to make work (with players feeding into a recorder), but I realised right at the end that you have to wait for the whole sequence to play out in real time before it can be saved.</p>
  <p>I don't want to have to wait an hour to get the file, I need it within a minute maximum. Is this possible with tone.js and if not is there any other programmatic way to do this?</p>