diff --git a/history.txt b/history.txt
index 6fbcb69d..56255770 100755
--- a/history.txt
+++ b/history.txt
@@ -3490,6 +3490,7 @@ Fixes:
 170630
 ------
 * Objects: reflect attribute inheritance status by ghosting / un-ghosting stage monitors
+* Objects: migrate experimental “jukebox” reporters to the new “my sounds” reporter
 
 
 Features:
diff --git a/objects.js b/objects.js
index c29bad6d..4748c9e7 100644
--- a/objects.js
+++ b/objects.js
@@ -1227,6 +1227,7 @@ SpriteMorph.prototype.initBlocks = function () {
 SpriteMorph.prototype.initBlocks();
 
 SpriteMorph.prototype.initBlockMigrations = function () {
+    // change blocks in existing projects to their updated version
     SpriteMorph.prototype.blockMigrations = {
         doStopAll: {
             selector: 'doStopThis',
@@ -1256,6 +1257,10 @@ SpriteMorph.prototype.initBlockMigrations = function () {
             selector: 'reportGet',
             inputs: [['costumes']]
         },
+        reportSounds: {
+            selector: 'reportGet',
+            inputs: [['sounds']]
+        },
         doMapStringCode: {
             selector: 'doMapValueCode',
             inputs: [['String'], '<#1>'],
@@ -1876,20 +1881,6 @@ SpriteMorph.prototype.blockTemplates = function (category) {
         blocks.push(watcherToggle('getTempo'));
         blocks.push(block('getTempo'));
 
-    // for debugging: ///////////////
-
-        if (this.world().isDevMode) {
-            blocks.push('-');
-            txt = new TextMorph(localize(
-                'development mode \ndebugging primitives:'
-            ));
-            txt.fontSize = 9;
-            txt.setColor(this.paletteTextColor);
-            blocks.push(txt);
-            blocks.push('-');
-            blocks.push(block('reportSounds'));
-        }
-
     } else if (cat === 'pen') {
 
         blocks.push(block('clear'));
@@ -6680,20 +6671,6 @@ StageMorph.prototype.blockTemplates = function (category) {
         blocks.push(watcherToggle('getTempo'));
         blocks.push(block('getTempo'));
 
-    // for debugging: ///////////////
-
-        if (this.world().isDevMode) {
-            blocks.push('-');
-            txt = new TextMorph(localize(
-                'development mode \ndebugging primitives:'
-            ));
-            txt.fontSize = 9;
-            txt.setColor(this.paletteTextColor);
-            blocks.push(txt);
-            blocks.push('-');
-            blocks.push(block('reportSounds'));
-        }
-
     } else if (cat === 'pen') {
 
         blocks.push(block('clear'));