My first thought was a tutor companion app so that a tutor [person] could monitor progress. Score their hours of practice, score their correct notes, correct timing, tone, speed etc.. Show the part of their practice pieces they make most errors on.
I suppose an AI could be trained to look for errors and act as a tutor, eg recommending practice pieces to counter bad habits or to encourage more competent play - like, your relative values are poor, practice this 'metronome' piece; or, you only play bar chords with your left hand, try this simple piece to focus on left-hand arpeggios.
I suppose an AI could be trained to look for errors and act as a tutor, eg recommending practice pieces to counter bad habits or to encourage more competent play - like, your relative values are poor, practice this 'metronome' piece; or, you only play bar chords with your left hand, try this simple piece to focus on left-hand arpeggios.