code: function encodeTrack(track) {
      var events = track.getEvents(), data = [],
          length = events.length, i,
          runningStatus = null, result;
  
      for (i = 0; i < length; i += 1) {
          result = encodeEvent(events[i], runningStatus);
          runningStatus = result.runningStatus;
  
          data[i] = result.data;
      }
  
      return encodeChunk('MTrk', buffer.Buffer.concat(data));
  }
docs: Encode a MIDI track chunk
  
  @param {module:midijs/lib/file/track~Track} track Track to encode
  @return {Buffer} Encoded track