Note-by-Note Practice Mode
There needs to be an options that stops playback in practice mode until you hit a note or chord correctly. This would make it much easier to get a feeling for what you are doing wrong and correct these mistakes immediately.
Currently this impossible since you only get feedback that you played something wrong but no chance to fix these mistakes since you are directly meant to play the next note/chord.
Yeah, I wish I could press a button or just say "Back" to rewind to the beginning of the current song section"