this is sometimes resulting in freeing memory which has not yet been malloced. need to understand better what's going on. possibly two concurrent invocations of initialiseSynth racing.

Source/FluidSynthModel.cpp

@@ -20,10 +20,10 @@ FluidSynthModel::~FluidSynthModel() {
 }
 
 void FluidSynthModel::initialise() {
-    if (initialised) {
-        delete_fluid_synth(synth);
-        delete_fluid_settings(settings);
-    }
+//    if (initialised) {
+//        delete_fluid_synth(synth);
+//        delete_fluid_settings(settings);
+//    }
     settings = new_fluid_settings();
     // https://sourceforge.net/p/fluidsynth/wiki/FluidSettings/
     fluid_settings_setstr(settings, "synth.verbose", "yes");