added electronic drum kit example

Author: sumn2u

en/beginner-projects/electronic-drum-kit.md

@@ -20,3 +20,13 @@ Create a fun interactive drum kit that plays sounds when you click buttons or pr
 ## Bonus Challenge
 Add the ability to record and play back drum sequences.
 
+
+## Live Demo
+<div align="center">
+<iframe src="https://codesandbox.io/embed/s3yv7r?view=preview"
+     style="width:100%; height: 500px; border:0; border-radius: 4px; overflow:hidden;"
+     title="interactive-drum-kit"
+     allow="accelerometer; ambient-light-sensor; camera; encrypted-media; geolocation; gyroscope; hid; microphone; midi; payment; usb; vr; xr-spatial-tracking"
+     sandbox="allow-forms allow-modals allow-popups allow-presentation allow-same-origin allow-scripts"
+   ></iframe>
+   </div>