Could be good. But….
I do not play the kind of music that is included. This app could be useful to me if all included data could be deleted and I could set up my own categories. I don’t need the online library. I play Irish music and would like to set up categories for jig, reel, hornpipe etc. My composers would be all completely different, if they were even known. For me would be better to use a tune source or recording reference. The app has potential but is not flexible for types of music other than the classical music that is included.