I used to use Google Play and bought lots of songs on there. They've moved over to YouTube music, but I can't listen to them with the screen locked unless I buy a subscription to premium? Is that right? YT music is free but not if you want to listen whilst out and about (only time I use it is on my phone whilst walking), so is there now no benefit to having bought the songs in the first place? I even had them downloaded on my old phone with Google Play so could listen without using data :(