diff --git a/README.md b/README.md
index f1d4362..3dbf65f 100644
--- a/README.md
+++ b/README.md
@@ -132,6 +132,8 @@ JZZ().openMidiOut()
   .ch(9).noteOn('cowbell', 127);
 ```
 
-## More information
+## Demo
+[**https://jazz-soft.net/demo/GmGsXg.html**](https://jazz-soft.net/demo/GmGsXg.html)
 
+## More information
 Please visit [**https://jazz-soft.net**](https://jazz-soft.net) for more information.  
diff --git a/package.json b/package.json
index e5b8cec..aeef52f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "jzz-midi-gm",
-  "version": "1.3.8",
+  "version": "1.3.9",
   "description": "General MIDI / GM2 / GS / XG instrument names",
   "main": "javascript/JZZ.midi.GM.js",
   "scripts": {