Biggest issue is constant drop outs. Second is the app doesn't close when I try to force close so I can't reset after an aforementioned drop out. Lastly, I really wish that when you search by artist that under that you would find a list of that artist's albums. Instead you find a list of all the songs from that artist. This makes it difficult to select an album from an artist to listen to. I've invested so much into my Amazon music library. I really wish accessing it was more reliable and easy.