Drag and drop the YouTube widget into the newly created zone. 

You may drop the widget in the timeline or canvas. 

Paste the URL for the YouTube video you wish to use in the URL section.

This guide provides step-by-step instructions on how to add background music to your playlist using the YouTube widget. It covers everything from adding the widget to your playlist to previewing and saving your changes. Use this guide if you want to enhance your playlist with background music.