It's garbage. It's barely usable. I'm going to have to switch to Spotify.
Google always does this thing where it trashes a mature service and replaces it with something really new and immature that doesn't fit the use case of their previous customers in the hopes that they'll acquire new customers. But there's no sales pitch for Youtube Music. It doesn't do anything new. It's just, "the last one wasn't as successful as we'd like, so let's change things up a bit." And with an attitude like that, the next one won't be successful either. Which is why Google keeps doing this over and over.
They have corporate commitment problems. They never take a service and make it good, they just scrap it and start a new one in the hopes that they'll luck into a big hit. They've had like a dozen different instant-messaging apps in the past decade, and none of them ever caught on, because they keep scrapping them. I couldn't even tell you what the current iteration is. I used to use Google Allo a bit, which was their last one, but then they scrapped that and made this most recent one. I don't know why they do this.
Just import them into the music app on my laptop, sync my library, and boom those tracks are available everywhere, just like google music. I actually like it better, since it's an actual app and I don't need to upload the tracks through chrome – I don't use chrome, I use firefox, and I used to have to use chrome just to upload my music.