diff --git a/GemmaM0_Band_Jacket/DiscoBandCamp/DiscoBandCamp.ino b/GemmaM0_Band_Jacket/DiscoBandCamp/DiscoBandCamp.ino
index dc1c44516..da0b39899 100644
--- a/GemmaM0_Band_Jacket/DiscoBandCamp/DiscoBandCamp.ino
+++ b/GemmaM0_Band_Jacket/DiscoBandCamp/DiscoBandCamp.ino
@@ -44,6 +44,55 @@
 #include "buttons.h"
 extern XYMap myXYMap;
 
+CRGB leds[ NUM_LEDS ];
+
+uint16_t XY(uint16_t x, uint16_t y, uint16_t width, uint16_t height)
+{
+  (void)width;
+  (void)height;
+  // any out of bounds address maps to the first hidden pixel
+  if( (x >= kMatrixWidth) || (y >= kMatrixHeight) ) {
+    return (LAST_VISIBLE_LED + 1);
+  }
+
+//   On the visual left of DiscoBandCamp, wearers right
+//     +------------------------------------------ 
+//   | 10   9   8   7   6   5   4   3   2   1   0
+//   | .    20  19  18  17  16  15  14  13  12  11
+//   | .    .   29  28  27  26  25  24  23  22  21
+//   | .    .   .   37  36  35  34  33  32  31  30  
+//   | .    .   .   .   44  43  42  41  40  39  38
+//   | .    .   .   .   .   50  49  48  47  46  45
+//   | .    .   .   .   .   .   55  54  53  52  51  
+//   | .    .   .   .   .   .   .   59  58  57  56
+
+//this is how DiscoBandCamp works
+  const uint8_t JacketTable[] = {
+10, 9,  8,  7,  6,  5,  4,  3,  2,  1,  0,  145,
+153,60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 
+120,11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 146,  
+154,80, 79, 78, 77, 76, 75, 74, 73, 72, 71, 182, 
+121,127,21, 22, 23, 24, 25, 26, 27, 28, 29, 147, 
+155,89, 88, 87, 86, 85, 84, 83, 82, 81, 176,183, 
+122,128,133,30, 31, 32, 33, 34, 35, 36, 37, 148,  
+156,97, 96, 95, 94, 93, 92, 91, 90, 171,177,184, 
+123,129,134,135,38, 39, 40, 41, 42, 43, 44, 149,  
+157,104,103,102,101,100,99, 98, 167,172,178,185, 
+124,130,134,136,139,45, 46, 47, 48, 49, 50, 150,  
+158,110,109,108,107,106,105,164,168,173,179,186, 
+125,131,134,137,140,142,51, 52, 53, 54, 55, 151,  
+159,115,114,113,112,111,162,165,169,174,180,187, 
+126,132,134,138,141,143,144,56, 57, 58, 59, 152,  
+160,119,118,117,116,161,163,166,170,175,181,188,
+  };
+
+  uint8_t i = (y * kMatrixWidth) + x;
+  uint8_t j = JacketTable[i];
+  return j;
+}
+// Instantiate an XYMap object
+XYMap myXYMap = XYMap::constructWithUserFunction(kMatrixWidth, kMatrixHeight, XY);
+
 // list of Functions:
 functionList effectList[] = {SolidRed,    //all pixels solid red
                              swirly,      //glittery swirly patterns
diff --git a/GemmaM0_Band_Jacket/DiscoBandCamp/XYmap.h b/GemmaM0_Band_Jacket/DiscoBandCamp/XYmap.h
index 3178e2e98..cf0e38083 100644
--- a/GemmaM0_Band_Jacket/DiscoBandCamp/XYmap.h
+++ b/GemmaM0_Band_Jacket/DiscoBandCamp/XYmap.h
@@ -41,51 +41,6 @@ extern CRGB leds[ NUM_LEDS ];
 // This code, plus the supporting 80-byte table is much smaller 
 // and much faster than trying to calculate the pixel ID with code.
 #define LAST_VISIBLE_LED 119
-uint16_t XY(uint16_t x, uint16_t y, uint16_t width, uint16_t height)
-{
-  (void)width;
-  (void)height;
-  // any out of bounds address maps to the first hidden pixel
-  if( (x >= kMatrixWidth) || (y >= kMatrixHeight) ) {
-    return (LAST_VISIBLE_LED + 1);
-  }
-
-//   On the visual left of DiscoBandCamp, wearers right
-//     +------------------------------------------ 
-//   | 10   9   8   7   6   5   4   3   2   1   0
-//   | .    20  19  18  17  16  15  14  13  12  11
-//   | .    .   29  28  27  26  25  24  23  22  21
-//   | .    .   .   37  36  35  34  33  32  31  30  
-//   | .    .   .   .   44  43  42  41  40  39  38
-//   | .    .   .   .   .   50  49  48  47  46  45
-//   | .    .   .   .   .   .   55  54  53  52  51  
-//   | .    .   .   .   .   .   .   59  58  57  56
-
-//this is how DiscoBandCamp works
-  const uint8_t JacketTable[] = {
-10, 9,  8,  7,  6,  5,  4,  3,  2,  1,  0,  145,
-153,60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 
-120,11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 146,  
-154,80, 79, 78, 77, 76, 75, 74, 73, 72, 71, 182, 
-121,127,21, 22, 23, 24, 25, 26, 27, 28, 29, 147, 
-155,89, 88, 87, 86, 85, 84, 83, 82, 81, 176,183, 
-122,128,133,30, 31, 32, 33, 34, 35, 36, 37, 148,  
-156,97, 96, 95, 94, 93, 92, 91, 90, 171,177,184, 
-123,129,134,135,38, 39, 40, 41, 42, 43, 44, 149,  
-157,104,103,102,101,100,99, 98, 167,172,178,185, 
-124,130,134,136,139,45, 46, 47, 48, 49, 50, 150,  
-158,110,109,108,107,106,105,164,168,173,179,186, 
-125,131,134,137,140,142,51, 52, 53, 54, 55, 151,  
-159,115,114,113,112,111,162,165,169,174,180,187, 
-126,132,134,138,141,143,144,56, 57, 58, 59, 152,  
-160,119,118,117,116,161,163,166,170,175,181,188,
-  };
-
-  uint8_t i = (y * kMatrixWidth) + x;
-  uint8_t j = JacketTable[i];
-  return j;
-}
+uint16_t XY(uint16_t x, uint16_t y, uint16_t width, uint16_t height);
+extern XYMap myXYMap;
 #endif
-
-// Instantiate an XYMap object
-XYMap myXYMap = XYMap::constructWithUserFunction(kMatrixWidth, kMatrixHeight, XY);
diff --git a/GemmaM0_Band_Jacket/DiscoBandCamp/effects.h b/GemmaM0_Band_Jacket/DiscoBandCamp/effects.h
index 709ac2172..b715c8ed2 100644
--- a/GemmaM0_Band_Jacket/DiscoBandCamp/effects.h
+++ b/GemmaM0_Band_Jacket/DiscoBandCamp/effects.h
@@ -4,7 +4,7 @@
 
 //   Selection of effects from the FastLED library & Macetech RGB Shades
 #include "XYmap.h"
-extern XYMap myXYMap;
+
 //  Triple Sine Waves
 void threeSine() {
 
diff --git a/GemmaM0_Band_Jacket/DiscoBandCamp/utils.h b/GemmaM0_Band_Jacket/DiscoBandCamp/utils.h
index 378a3d039..c473c8f1c 100644
--- a/GemmaM0_Band_Jacket/DiscoBandCamp/utils.h
+++ b/GemmaM0_Band_Jacket/DiscoBandCamp/utils.h
@@ -2,7 +2,7 @@
 //
 // SPDX-License-Identifier: MIT
 #include "XYmap.h"
-extern XYMap myXYMap;
+
 // Assorted useful functions and variables
 // Global variables
 boolean effectInit = false;   // indicates if a pattern has been recently switched