MKConductor
MKPerformer, MKNoteFilter
& MKInstrument
MKPartPerformer &
MKPartRecorder
MKScorePerformer &
MKScoreRecorder
MKFilePerformer &
MKFileWriter
MKScorefilePerformer &
MKScorefileWriter
MKNoteSender &
MKNoteReceiver
MKSynthInstrument
MKMidi