YouTube Free ‘Audio Library’ — A Useful Resource.
Click to ENLARGE.
I kind of stumbled upon it online.
Easy enough to find. Just Google “YouTube Audio Library” or you can find it in YOUR YouTube Studio (i.e., under your YouTube account).
You can freely download the track then embed it in the video.
Just wanted to make sure YOU knew about it. Very handy. I know I will be going back to it.