music help please...

[wing commander]

    I've always used spotify to listen to music on my android devices,never paid for the premium service just put up with the ads..However on the free streams you cant download the music to your device which is fair enough..

   Sadly my gym's wifi is shocking so cant pick up spotify...Not been a tech,app or whatever genius,can any of you good people tell me if there is a way of downloading music to my Samsung to play back even without a tinternet connection...Muchly thanks...