diff --git a/interface/src/Application.cpp b/interface/src/Application.cpp
index 8b1d70e9e2..ffe2f781db 100644
--- a/interface/src/Application.cpp
+++ b/interface/src/Application.cpp
@@ -504,7 +504,13 @@ public:
             }
 
             if (message->message == WM_DEVICECHANGE) {
-                Midi::USBchanged();                // re-scan the MIDI bus
+                const float MIN_DELTA_SECONDS = 2.0f; // de-bounce signal
+                static float lastTriggerTime = 0.0f;
+                const float deltaSeconds = secTimestampNow() - lastTriggerTime;
+                lastTriggerTime = secTimestampNow();
+                if (deltaSeconds > MIN_DELTA_SECONDS) {
+                    Midi::USBchanged();                // re-scan the MIDI bus
+                }
             }
         }
         return false;
diff --git a/libraries/midi/src/Midi.cpp b/libraries/midi/src/Midi.cpp
index 69c35c4a20..1f190111f2 100644
--- a/libraries/midi/src/Midi.cpp
+++ b/libraries/midi/src/Midi.cpp
@@ -163,7 +163,7 @@ void Midi::sendRawMessage(int device, int raw) {
 void Midi::sendMessage(int device, int channel, int type, int note, int velocity) {
     int message = (channel - 1) | (type << MIDI_SHIFT_STATUS);
     if (broadcastEnabled) {
-        for (int i = 0; i < midihout.size(); i++) {
+        for (int i = 1; i < midihout.size(); i++) {  //  Skip 0 (Microsoft GS Wavetable Synth)
             if (midihout[i] != NULL) {
                 midiOutShortMsg(midihout[i], message | (note << MIDI_SHIFT_NOTE) | (velocity << MIDI_SHIFT_VELOCITY));
             }
@@ -174,9 +174,9 @@ void Midi::sendMessage(int device, int channel, int type, int note, int velocity
 }
 
 void Midi::sendNote(int status, int note, int velocity) {
-    for (int i = 0; i < midihout.size(); i++) {
+    for (int i = 1; i < midihout.size(); i++) {  //  Skip 0 (Microsoft GS Wavetable Synth)
         if (midihout[i] != NULL) {
-            midiOutShortMsg(midihout[i], status + (note << MIDI_SHIFT_NOTE) + (velocity << MIDI_SHIFT_VELOCITY));
+            midiOutShortMsg(midihout[i], status | (note << MIDI_SHIFT_NOTE) | (velocity << MIDI_SHIFT_VELOCITY));
         }
     }
 }
@@ -283,9 +283,6 @@ void Midi::midiHardwareChange() {
 
 Midi::Midi() {
     instance = this;
-#if defined Q_OS_WIN32
-    midiOutExclude.push_back("Microsoft GS Wavetable Synth");        // we don't want to hear this thing (Lags)
-#endif
     MidiSetup();
 }