I have a few questions about it: -if i put all my music in icloud music library, the songs will appear on my iphone. Does it mean that i need an internet connection to listen to them? -are the songs actually stored in my iphone? Like...I have 3 gigs of music, can I put it in the icloud music library and listen to them on my iphone with an internet connection without having the actual songs stored on my iphone??? -do I need Apple Music subscription for it ?