diff --git a/external/abseil-cpp b/external/abseil-cpp
index a0d1e098..83c1d65c 160000
--- a/external/abseil-cpp
+++ b/external/abseil-cpp
@@ -1 +1 @@
-Subproject commit a0d1e098c2f99694fa399b175a7ccf920762030e
+Subproject commit 83c1d65c90a92aa49632b9ac5a793214bb0768bc
diff --git a/sfizz/MathHelpers.h b/sfizz/MathHelpers.h
index 93e11bec..553f4d2c 100644
--- a/sfizz/MathHelpers.h
+++ b/sfizz/MathHelpers.h
@@ -73,4 +73,6 @@ constexpr Type pi { 3.141592653589793238462643383279502884 };
 template <class Type>
 constexpr Type twoPi { 2 * pi<Type> };
 template <class Type>
-constexpr Type piTwo { pi<Type> / 2 };
\ No newline at end of file
+constexpr Type piTwo { pi<Type> / 2 };
+template <class Type>
+constexpr Type piFour { pi<Type> / 4 };
\ No newline at end of file
diff --git a/sfizz/StereoBuffer.h b/sfizz/StereoBuffer.h
index 0ec80a6e..fa1526b5 100644
--- a/sfizz/StereoBuffer.h
+++ b/sfizz/StereoBuffer.h
@@ -31,8 +31,7 @@
 #include <iostream>
 #include <type_traits>
 
-enum class Channel { left,
-    right };
+enum class Channel { left, right };
 
 template <class Type, unsigned int Alignment = SIMDConfig::defaultAlignment>
 class StereoBuffer {
diff --git a/sfizz/Voice.cpp b/sfizz/Voice.cpp
index 10404d60..d235150c 100644
--- a/sfizz/Voice.cpp
+++ b/sfizz/Voice.cpp
@@ -22,7 +22,7 @@
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "Voice.h"
-#include "Voice.h"
+#include "Defaults.h"
 #include "SIMDHelpers.h"
 #include "SfzHelpers.h"
 #include "absl/algorithm/container.h"
@@ -53,12 +53,13 @@ void sfz::Voice::startVoice(Region* region, int delay, int channel, int number,
     baseGain = region->getBaseGain();
     if (triggerType != TriggerType::CC)
         baseGain *= region->getNoteGain(number, value);
-    DBG("Voice base gain with note crossfades: " << baseGain);
     baseGain *= region->getCCGain(ccState);
-    DBG("Voice base gain with CC crossfades: " << baseGain);
+    if (region->amplitudeCC)
+        baseGain *= normalizeCC(ccState[region->amplitudeCC->first]) * normalizePercents(region->amplitudeCC->second);
+    amplitudeEnvelope.reset(baseGain);
+    
     sourcePosition = region->getOffset();
     initialDelay = delay + region->getDelay();
-    DBG("Voice initial delay: " << initialDelay);
     baseFrequency = midiNoteFrequency(number) * pitchRatio;
     prepareEGEnvelope(delay, value);
 }
@@ -90,7 +91,6 @@ bool sfz::Voice::isFree() const noexcept
     return (region == nullptr);
 }
 
-
 void sfz::Voice::release(int delay) noexcept
 {
     if (state == State::playing) {
@@ -123,18 +123,26 @@ void sfz::Voice::registerCC(int delay, int channel [[maybe_unused]], int ccNumbe
 {
     if (ccNumber == 64 && noteIsOff && ccValue < 63)
         release(delay);
+
+    if (region->amplitudeCC && ccNumber == region->amplitudeCC->first) {
+        const float newGain { normalizeCC(ccValue) * normalizePercents(region->amplitudeCC->second) * baseGain };
+        amplitudeEnvelope.registerEvent(delay, newGain);
+    }
 }
 
 void sfz::Voice::registerPitchWheel(int delay [[maybe_unused]], int channel [[maybe_unused]], int pitch [[maybe_unused]]) noexcept
 {
+    // TODO
 }
 
 void sfz::Voice::registerAftertouch(int delay [[maybe_unused]], int channel [[maybe_unused]], uint8_t aftertouch [[maybe_unused]]) noexcept
 {
+    // TODO
 }
 
 void sfz::Voice::registerTempo(int delay [[maybe_unused]], float secondsPerQuarter [[maybe_unused]]) noexcept
 {
+    // TODO
 }
 
 void sfz::Voice::setSampleRate(float sampleRate) noexcept
@@ -167,9 +175,10 @@ void sfz::Voice::renderBlock(StereoSpan<float> buffer) noexcept
     else
         fillWithData(buffer);
 
-    buffer.applyGain(baseGain);
-
     auto envelopeSpan = tempSpan1.first(numSamples);
+    amplitudeEnvelope.getBlock(envelopeSpan);
+    buffer.applyGain(envelopeSpan);
+
     egEnvelope.getBlock(envelopeSpan);
     buffer.applyGain(envelopeSpan);
 
diff --git a/sfizz/Voice.h b/sfizz/Voice.h
index 760fc3d9..9f940bc2 100644
--- a/sfizz/Voice.h
+++ b/sfizz/Voice.h
@@ -24,6 +24,7 @@
 #pragma once
 #include "ADSREnvelope.h"
 #include "Config.h"
+#include "LinearEnvelope.h"
 #include "Region.h"
 #include "StereoBuffer.h"
 #include "StereoSpan.h"
@@ -109,6 +110,10 @@ private:
 
     const CCValueArray& ccState;
     ADSREnvelope<float> egEnvelope;
+    LinearEnvelope<float> amplitudeEnvelope;
+    LinearEnvelope<float> leftPanEnvelope;
+    LinearEnvelope<float> rightPanEnvelope;
+
     LEAK_DETECTOR(Voice);
 };