manual/include/midi-track-controls.html

<p>A typical <dfn>MIDI track header</dfn> looks like this:</p>
<img src="/images/typical-midi-track-controls.png" alt="midi track controls"
  />

<p>
  To see the full set of MIDI track controls, you need to increase the
  <a href="@@track-height">track height</a>
  beyond the default. MIDI tracks show only a few of the control elements
  when there is insufficient vertical space.
</p>
<p>
  A MIDI track has the same basic
  <a href="@@audio-track-controls">controls as an audio track</a>,
  with the addition of two extra elements. The set of buttons below the main track
  controls the <dfn>MIDI channel</dfn>(s) that will be visible in the editor. A MIDI track's
  data may span any number of the 16 available MIDI channels, and sometimes it is
  useful to view only a subset of those channels; different instruments may,
  for example, be put on different channels. Clicking on a channel number toggles
  its visibility.
</p>
<p>
  To the right of the MIDI track controls is a representation of a piano keyboard
  called the <dfn>scroomer</dfn>. This performs a couple of functions.
  The scrollbar controls the range of pitches that are visible on the
  track, as visualized by the piano keyboard.<br>
  Drag the body of the scrollbar up and down to display higher or lower
  pitches.<br>
  Drag the scrollbar handles to zooms in and out and increase and decrease the
  range of visible pitches.<br>
  clicking on the piano plays the corresponding MIDI note for reference.
</p>
<p>
  To edit the contents of a MIDI track see <a href="@@edit-midi">Edit
  MIDI</a>.
</p>