If you upload a video or streaming mp3, PG requests the license number in the post so they and everyone else knows you're doing it the right way.

Youtube will let you post whatever you want. However, they have ways to quickly figure out the song and if the artist lets people use it. Some do not and the Youtube scanners will quickly disable the video. If you are permitted and have not provided proof of a license, they will monetize the video by dropping ads before it and perhaps in the middle of it with all proceeds going to the copyright holder.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.