diff --git a/Software/Gravity/Gravity.ino b/Software/Gravity/Gravity.ino
index bd45a1a..fe49c5c 100644
--- a/Software/Gravity/Gravity.ino
+++ b/Software/Gravity/Gravity.ino
@@ -9,7 +9,7 @@
 #include "config.h"
 #include "fonts.h"
 
-#define VERSION "V:1.2A"
+#define VERSION "V:1.2A2"
 
 byte memCode = 'd'; //Change to different letter if you changed the data structure
 
@@ -33,15 +33,16 @@ struct channel {
   uint8_t swing   : 3;
   uint8_t offset  : 7; //mv: 128
   uint8_t gate    : 6; //mv: 64
+  bool isMute     : 1;
 };
 
 channel channels[6] = {  //array of channel settings
-  { 0, 7, 0, 0, 0, 0, 0, 0, 0 },
-  { 0, 7, 0, 0, 0, 0, 0, 0, 0 },
-  { 0, 7, 0, 0, 0, 0, 0, 0, 0 },
-  { 0, 7, 0, 0, 0, 0, 0, 0, 0 },
-  { 0, 7, 0, 0, 0, 0, 0, 0, 0 },
-  { 0, 7, 0, 0, 0, 0, 0, 0, 0 }
+  { 0, 7, 0, 0, 0, 0, 0, 0, 0, 0 },
+  { 0, 7, 0, 0, 0, 0, 0, 0, 0, 0 },
+  { 0, 7, 0, 0, 0, 0, 0, 0, 0, 0 },
+  { 0, 7, 0, 0, 0, 0, 0, 0, 0, 0 },
+  { 0, 7, 0, 0, 0, 0, 0, 0, 0, 0 },
+  { 0, 7, 0, 0, 0, 0, 0, 0, 0, 0 }
 };
 
 bool seqA1[16] = {1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1}; //switch to struct seqs { uint32_t sequence; uint8_t length : 5 ; uint8_t currentStep : 5}. test with lengthOf
@@ -415,19 +416,20 @@ void sendTriggers() { //rename to onPulse or something
         digitalWrite(outsPins[i], LOW);
       }
     }
+    if (!channels[i].isMute) {
+      if ((channels[i].mode == 3 && channelPulseCount[i] == 0 && stepIsOdd == 0)
+      || (channels[i].mode == 3 && channelPulseCount[i] == channels[i].swing && stepIsOdd == 1) //swing 
+        ) {
+          digitalWrite(outsPins[i], HIGH);
+      }
 
-    if ((channels[i].mode == 3 && channelPulseCount[i] == 0 && stepIsOdd == 0)
-     || (channels[i].mode == 3 && channelPulseCount[i] == channels[i].swing && stepIsOdd == 1) //swing 
-       ) {
-        digitalWrite(outsPins[i], HIGH);
-    }
-
-    if ((channels[i].mode == 0 && channelPulseCount[i] == channels[i].offset) //CLK with offset
-     || (channels[i].mode == 1 && channelPulseCount[i] == 0 && (random(10) + 1) > randAmount) //RND
-     || (channels[i].mode == 4 && channelPulseCount[i] == 0) //Gate
-       ) {
-        digitalWrite(outsPins[i], HIGH);
-        gatePulseCount[i] = 0; //reset gate here to avoid length "countdown" effect
+      if ((channels[i].mode == 0 && channelPulseCount[i] == channels[i].offset) //CLK with offset
+      || (channels[i].mode == 1 && channelPulseCount[i] == 0 && (random(10) + 1) > randAmount) //RND
+      || (channels[i].mode == 4 && channelPulseCount[i] == 0) //Gate
+        ) {
+          digitalWrite(outsPins[i], HIGH);
+          gatePulseCount[i] = 0; //reset gate here to avoid length "countdown" effect
+      }
     }
     if (channelPulseCount[i] < channelPulsesPerCycle[i]) {
       channelPulseCount[i]++;
diff --git a/Software/Gravity/Interactions.ino b/Software/Gravity/Interactions.ino
index 7175344..0943cb1 100644
--- a/Software/Gravity/Interactions.ino
+++ b/Software/Gravity/Interactions.ino
@@ -392,7 +392,7 @@ void checkInputs() {
   }
 
   //play button
-  if (!digitalRead(START_STOP_BTN_PIN) && !playBtnPushed) {
+  if (!digitalRead(START_STOP_BTN_PIN) && !playBtnPushed && !shiftBtnPushed) {
     if (masterClockMode == 0) {
       calculateBPMTiming();
       if (!isPlaying) {
@@ -411,6 +411,15 @@ void checkInputs() {
     playBtnPushed = false;
   }
 
+  //shift + play = mute channel
+  if (!digitalRead(START_STOP_BTN_PIN) && !playBtnPushed && shiftBtnPushed) {
+    channels[displayTab - 1].isMute = !channels[displayTab - 1].isMute;
+    playBtnPushed = true;
+    updateScreen();  //to wake up the screen if turned off
+  } else if (digitalRead(START_STOP_BTN_PIN) && playBtnPushed) {
+    playBtnPushed = false;
+  }
+
   //shift button
   if (!digitalRead(SHIFT_BTN_PIN) && !shiftBtnPushed) {
     shiftBtnPushed = true;