diff --git a/modules/juce_audio_basics/synthesisers/juce_Synthesiser.cpp b/modules/juce_audio_basics/synthesisers/juce_Synthesiser.cpp
index 96a52711a5..4df64603e0 100644
--- a/modules/juce_audio_basics/synthesisers/juce_Synthesiser.cpp
+++ b/modules/juce_audio_basics/synthesisers/juce_Synthesiser.cpp
@@ -304,7 +304,7 @@ void Synthesiser::startVoice (SynthesiserVoice* const voice,
         voice->currentPlayingMidiChannel = midiChannel;
         voice->noteOnTime = ++lastNoteOnCounter;
         voice->currentlyPlayingSound = sound;
-        voice->keyIsDown = true;
+        voice->setKeyDown (true);
         voice->sostenutoPedalDown = false;
         voice->sustainPedalDown = sustainPedalsDown[midiChannel];
 
@@ -342,7 +342,7 @@ void Synthesiser::noteOff (const int midiChannel,
                 {
                     jassert (! voice->keyIsDown || voice->sustainPedalDown == sustainPedalsDown [midiChannel]);
 
-                    voice->keyIsDown = false;
+                    voice->setKeyDown (false);
 
                     if (! (voice->sustainPedalDown || voice->sostenutoPedalDown))
                         stopVoice (voice, velocity, allowTailOff);
diff --git a/modules/juce_audio_basics/synthesisers/juce_Synthesiser.h b/modules/juce_audio_basics/synthesisers/juce_Synthesiser.h
index 961e90188b..cad5ac393f 100644
--- a/modules/juce_audio_basics/synthesisers/juce_Synthesiser.h
+++ b/modules/juce_audio_basics/synthesisers/juce_Synthesiser.h
@@ -182,6 +182,8 @@ public:
     virtual void renderNextBlock (AudioBuffer<float>& outputBuffer,
                                   int startSample,
                                   int numSamples) = 0;
+
+    /** A double-precision version of renderNextBlock() */
     virtual void renderNextBlock (AudioBuffer<double>& outputBuffer,
                                   int startSample,
                                   int numSamples);
@@ -214,6 +216,11 @@ public:
     */
     bool isKeyDown() const noexcept                             { return keyIsDown; }
 
+    /** Allows you to modify the flag indicating that the key that triggered this voice is still held down.
+        @see isKeyDown
+    */
+    void setKeyDown (bool isNowDown) noexcept                   { keyIsDown = isNowDown; }
+
     /** Returns true if the sustain pedal is currently active for this voice. */
     bool isSustainPedalDown() const noexcept                    { return sustainPedalDown; }