Hi. Thanks you for your work.
But unfortunately this app is unusable:
1. Midi dosen't work. You can setup it up but when song stars, app wants to use microphone. (in 3.0 ver. it worked)
2. You can't choose songs by category and difficulty level. Only Yousician suggestions (in 3.0 ver. it worked).
3. Yousician hangs after two songs/5 min. Very annoying. You have enough after two times.