diff --git a/src/plugins/fluidsynthsoundcontroller/fluidsynthsoundcontroller.cpp b/src/plugins/fluidsynthsoundcontroller/fluidsynthsoundcontroller.cpp
--- a/src/plugins/fluidsynthsoundcontroller/fluidsynthsoundcontroller.cpp
+++ b/src/plugins/fluidsynthsoundcontroller/fluidsynthsoundcontroller.cpp
@@ -72,17 +72,21 @@
 
 void FluidSynthSoundController::setPitch(qint8 pitch)
 {
-    m_pitch = pitch;
-    fluid_synth_cc(m_synth, 1, 101, 0);
-    fluid_synth_cc(m_synth, 1, 6, 12);
-    float accurate_pitch = (m_pitch + 12) * (2.0 / 3) * 1024;
-    fluid_synth_pitch_bend(m_synth, 1, qMin(qRound(accurate_pitch), 16 * 1024 - 1));
+    if (m_pitch != pitch) {
+        m_pitch = pitch;
+        fluid_synth_cc(m_synth, 1, 101, 0);
+        fluid_synth_cc(m_synth, 1, 6, 12);
+        float accurate_pitch = (m_pitch + 12) * (2.0 / 3) * 1024;
+        fluid_synth_pitch_bend(m_synth, 1, qMin(qRound(accurate_pitch), 16 * 1024 - 1));
+    }
 }
 
 void FluidSynthSoundController::setVolume(quint8 volume)
 {
-    m_volume = volume;
-    fluid_synth_cc(m_synth, 1, 7, m_volume * 127 / 200);
+    if (m_volume != volume) {
+        m_volume = volume;
+        fluid_synth_cc(m_synth, 1, 7, m_volume * 127 / 200);
+    }
 }
 
 void FluidSynthSoundController::setTempo (quint8 tempo)