Hi,
I have had issues with Play Music ever since I got my Z3 compact last year, with songs not downloading etc and meaning I was using lots of data and battery when I presumed the songs were on the phone itself.
Now, since updating to Lollipop it has got worse. I decided to delete all music, then use Media Go to add all my music back onto my phone. It said 1700 songs copied over so I presumed these songs were physically on the phone (SD card).
Then when I tried to play no songs would play. So a restart later and the songs play... However, only songs previously bought with iTunes will play, anything bought on Google Play gets skipped. Also, a lot of songs are greyed out and say I need an internet connection to play but still play (if skipping, but not when clicking directly).
Sick of it! On iPhone I buy a song and it is there, physically on the phone. No stupid streaming! Why is it not so simple on Android?!