diff --git a/Magical8bitPlug2.jucer b/Magical8bitPlug2.jucer
index 912c68f..31b35e8 100644
--- a/Magical8bitPlug2.jucer
+++ b/Magical8bitPlug2.jucer
@@ -68,6 +68,8 @@
             file="Source/VibratoParamsComponent.h"/>
     </GROUP>
     <GROUP id="{630C27C7-03AA-CFC6-2FC4-4CE2DBE3640A}" name="Source">
+      <FILE id="LHv5E3" name="CustomSynth.cpp" compile="1" resource="0" file="Source/CustomSynth.cpp"/>
+      <FILE id="kpCPIX" name="CustomSynth.h" compile="0" resource="0" file="Source/CustomSynth.h"/>
       <FILE id="H2Vgbj" name="FrameSequenceParseErrors.cpp" compile="1" resource="0"
             file="Source/FrameSequenceParseErrors.cpp"/>
       <FILE id="Gwt2vB" name="FrameSequenceParseErrors.h" compile="0" resource="0"
diff --git a/Source/CustomSynth.cpp b/Source/CustomSynth.cpp
new file mode 100644
index 0000000..6434d8a
--- /dev/null
+++ b/Source/CustomSynth.cpp
@@ -0,0 +1,21 @@
+/*
+  ==============================================================================
+
+    CustomSynth.cpp
+    Created: 17 May 2021 11:29:59pm
+    Author:  除村武志
+
+  ==============================================================================
+*/
+
+#include "CustomSynth.h"
+
+CustomSynth::CustomSynth(Magical8bitPlug2AudioProcessor& p) : processor(p) {}
+
+void CustomSynth::noteOn(int midiChannel, int midiNoteNumber, float velocity) {
+    Synthesiser::noteOn(midiChannel, midiNoteNumber, velocity);
+}
+
+void CustomSynth::noteOff(int midiChannel, int midiNoteNumber, float velocity, bool allowTailOff) {
+    Synthesiser::noteOff(midiChannel, midiNoteNumber, velocity, allowTailOff);
+}
diff --git a/Source/CustomSynth.h b/Source/CustomSynth.h
new file mode 100644
index 0000000..ce09be4
--- /dev/null
+++ b/Source/CustomSynth.h
@@ -0,0 +1,25 @@
+/*
+  ==============================================================================
+
+    CustomSynth.h
+    Created: 17 May 2021 11:29:59pm
+    Author:  除村武志
+
+  ==============================================================================
+*/
+
+#pragma once
+#include "../JuceLibraryCode/JuceHeader.h"
+
+class Magical8bitPlug2AudioProcessor;
+
+class CustomSynth : public Synthesiser {
+public:
+    CustomSynth(Magical8bitPlug2AudioProcessor& p);
+    
+    void noteOn(int midiChannel, int midiNoteNumber, float velocity) override;
+    void noteOff(int midiChannel, int midiNoteNumber, float velocity, bool allowTailOff) override;
+    
+private:
+    Magical8bitPlug2AudioProcessor& processor;
+};
diff --git a/Source/PluginProcessor.cpp b/Source/PluginProcessor.cpp
index 1ca7883..fae053e 100644
--- a/Source/PluginProcessor.cpp
+++ b/Source/PluginProcessor.cpp
@@ -124,6 +124,7 @@ Magical8bitPlug2AudioProcessor::Magical8bitPlug2AudioProcessor()
 }
   )
 , settingRefs (&parameters)
+, synth(*this)
 #ifndef JucePlugin_PreferredChannelConfigurations
 , AudioProcessor (BusesProperties()
 #if ! JucePlugin_IsMidiEffect
diff --git a/Source/PluginProcessor.h b/Source/PluginProcessor.h
index 8a9e9da..bd82f6d 100644
--- a/Source/PluginProcessor.h
+++ b/Source/PluginProcessor.h
@@ -13,6 +13,7 @@
 #include "../JuceLibraryCode/JuceHeader.h"
 #include "Settings.h"
 #include "Voices.h"
+#include "CustomSynth.h"
 
 
 //==============================================================================
@@ -77,7 +78,7 @@ public:
 
 private:
     //==============================================================================
-    Synthesiser synth;
+    CustomSynth synth;
 
     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (Magical8bitPlug2AudioProcessor)
 };