-k [KEY]  Play in the given key.  Allowable keys are
            'A'-'G' followed by an optional '#' or 'b'.
            Default is D.
  -h        Harmonic minor mode
  -r        Relative minor mode
  -x        Mixolidian mode
  -K        A Klezmer mode (flat 2, sharp 6)
  -S        Send SKINI to stdout instead of MIDI from a
            virtual source.
  -V        Use the far left of the controller as a
            volume control.
  -o [N]    Divide the trackpad vertically into this many
            octaves.  Default is 5.
  -s [N]    Octave Shift: how far down to shift from the
            top of our range.  Default is 3.
  -v        Use velocity.  When pressing keys, set midi
            velocity to the finger width detected on the
            trackpad.
  -a        Send aftertouch midi messages based on how fat
            each finger is
  -c [N]    Send on channel N.  Default is 3.
  -p        Send channel pressure messages based on how fat
            all the fingers are on average,
  -P        Fake channel pressure using volume instead.