At first, this app was wonderful. And still, I think this is a great way to get started with music. Unfortunately, it has gone downhill severely after using it for 2 years. Songs I've made randomly disappear from the mobile app, notes randomly shift, annoyingly, everytime I open the app it plays a random song. Overall, the app is slowly deteriorating. The help center was helpful at first, but they seem to have given up on me and I don't blame them. I hope some day I'll rate it 5 stars again.