I have terabytes of my own music that I've collected over 30 years. I have CDs for them all. Unfortunately YouTube likes to play games and not allow you to play your own personal music. Which I find absolutely disgusting. If they would have allowed me to play my own music and then purchase music on top of that so that I could own it then I would use YouTube more often. But because they are disgustingly greedy I refuse to use the app and I only use the Android auto app because it works with car