Completely useless. The main issue that everyone is running into with "copyright free" music is there is literally nothing that stops you from turning it into copyrighted later. So you can wake up to a notification of a couple hundred copyright notices on your videos from 5 years ago, because a guy whose "copyright free" music you were using suddenly became popular and decided "hey, what if I just register all of my old songs and start selling them, surely it will not fuck over anyone in the process". I've heard too many streamers talking about having to kill their old vods uploaded from twitch because of it. And they all eventually switch to recording a stream separately without a music they were listening to, and uploading this instead of a regular vod