Incredibly annoying to use and not user friendly. Everytime I used this damn app I just get angry, on both of my devices there's an issue where it doesn't let me add songs to my playlists and where it takes AGES to actually play a song. This is whether I'm on data, my own wifi, at someone else's house or whatever. It's not an issue with my devices, nor an issue with my wifi. It's a problem with the app itself. It seems like it should be simple but it's stupidly difficult to use.