class Musician {
  // The default Musician class plays notes using its PROGRAM & CONTROLLER.
  int programNumber ; // PROGRAM NUMBER is the instrument.
  // INSTRUMENT FROM http://midi.teragonaudio.com/tutr/gm.htm
  int controlEffectNumber ; // CONTROLLER for special effects.
  // EFFECT FROM http://midi.teragonaudio.com/tech/midispec.htm
  int controlEffectData2 ; // strength of effect, 0..127
  int MIDIchannel = 0 ; 
  Musician(int programNumber, int controlEffectNumber, int controlEffectData2,
      int MIDIchannel) {
    this.programNumber = programNumber ;
    this.controlEffectNumber = controlEffectNumber ;
    this.controlEffectData2 = controlEffectData2 ;
    this.MIDIchannel = MIDIchannel ;
    //if (midiDeviceIndex == 0) {
      try {
        // Since there is only 1 Musician per MIDIchannel, just set the instrument
        // PROGRAM for that MIDIchannel in this constructor.
        ShortMessage patchMessage = new ShortMessage() ;
        patchMessage.setMessage(ShortMessage.PROGRAM_CHANGE, MIDIchannel, programNumber, 0);
        receiver.send(patchMessage, -1L);  // send it now
      } catch (InvalidMidiDataException ix) {
        System.err.println("InvalidMidiDataException: " + ix.getMessage());
      }
    //}
  }
  // Play or silence the note parameter. Play when isSounding is true.
  // Parameter isHighlighted when true means to visually highlight the Note.
  // When parameter isSounding is also true, pop the graphic to 3D.
  // Visual display and NOTE_ON NOTE_OFF are delegated to Note.display().
  // STUDENT: Extend this function to pass tonic and scaleix from the
  // incoming function call to function note.display() below
  // by adding parameters to playNote(). When you try to run you will
  // see errors in one or more calls to playNote() because of the added
  // parameters tonic and scaleix. For an incoming OSC message those
  // parameters must be the values arriving in the OSC message.
  // For mousePressed played notes in the main server draw() code, just
  // pass arguments of -1 for these new parameters.
  void playNote(Note note, boolean isSounding) {
    try {
      if (isSounding) {
        ShortMessage patchMessage = new ShortMessage() ;
        patchMessage.setMessage(ShortMessage.PROGRAM_CHANGE, MIDIchannel, programNumber, 0);
        receiver.send(patchMessage, -1L);  // send it now
        ShortMessage controllerOn = new ShortMessage() ;
        controllerOn.setMessage(ShortMessage.CONTROL_CHANGE, MIDIchannel,
          controlEffectNumber, controlEffectData2);
        receiver.send(controllerOn, -1L);  // send it now
      }
      note.display(isSounding, MIDIchannel);
    } catch (InvalidMidiDataException ix) {
      System.err.println("InvalidMidiDataException: " + ix.getMessage());
    }
  } 
  // Increase or decrease the CONTROL_CHANGE effect level.
  void setEffectLevel(int level) {
    this.controlEffectData2 = level ;
  }
}