Whenever I download a song on my phone, does it automatically get saved on google play music? Also, right now I don't have any songs on my phone, but I do have all my songs on google play that I uploaded from my computer. Do I need to have the songs on my phone too, or can I just listen to them from google play? Lastly, do I need internet access on my phone to hear my music from google play? Sorry for all the questions. I'm coming from an iphone so I'm still getting used to android. Thanks!