-#include "ardour/ardour.h"
-#include "ardour/session.h"
-#include "ardour/audioengine.h"
+#include "ardour/buffer_set.h"
+#include "ardour/chan_count.h"
+#include "ardour/chan_mapping.h"
+#include "ardour/data_type.h"
+#include "ardour/midi_buffer.h"
+#include "ardour/midi_state_tracker.h"