I bought some music in Plays store.
8 songs of about 60 are on my phone in Play Music.
How can I download the rest so I have them available onffline?
The phone is a Samsung S4.
PS I do have an iphone 5 too which I can easily carry out this task.

Is this what you’re after?

https://support.google.com/googleplay/answer/1250232?hl=en-GB

If you open the Play Music application do the 8 songs that have downloaded have a “white drawing pin inside a blue circle” icon near them?

If so that is what you need to find on the other 52 songs, when you click the drawing pin it downloads the tunes. I take it you have ample phone memory left?

HTH

Thanks