HOW TO DOWNLOAD MUSIC FOR ABANDONED VIDEOS

This is pretty neat, will have to save this and try later. Thanks, Tom!

Good Video mate, however I know of an easier method for Android users.
Search for "Dentax YouTube downloaded" I've used it for a number of year. You can download video's or just audio at different quality levels. Simply share the video in the YouTube app to the dentax YouTube downloaded. P.S. you may need to go into setting to enable audio options as I did many years ago.
Another option for youtube playback video or download is New pipe, available on the fdroid app store.

Created a quick video to show you the apps.