diff --git a/M0_Simple_Synth_01/images/Capture1.PNG b/M0_Simple_Synth_01/images/Capture1.PNG
new file mode 100644
index 0000000..e91c74f
Binary files /dev/null and b/M0_Simple_Synth_01/images/Capture1.PNG differ
diff --git a/M0_Simple_Synth_04/M0_Simple_Synth_04.ino b/M0_Simple_Synth_04/M0_Simple_Synth_04.ino
index 6e1130c..9b73e3f 100644
--- a/M0_Simple_Synth_04/M0_Simple_Synth_04.ino
+++ b/M0_Simple_Synth_04/M0_Simple_Synth_04.ino
@@ -3,10 +3,12 @@
 #include <Adafruit_DotStar.h>
 #include "pitchToFrequency.h"
 
-// M0 Trinket Synth - Exercise 03
+// M0 Trinket Synth - Exercise 04
 // Create a Simple LFO controlled by CC
 // Improved
 //
+// Listens to the value of CC and adjusts the period of the dot on the M0
+//
 
 
 // Setup Onboard Dot
@@ -30,7 +32,6 @@ uint8_t state = 0;
 
 uint16_t counterCompare = 100;
 
-
 uint8_t lfoCCValue = 100;