I downloaded Midi files for using as a lessons, but after transferring it to keyboard via manager, I had experienced various grades of failure:   The file was there but not working, no sound of metronome or any sign of progress Another file worked, but only a sound with no key notation on the lcd Another file worked after editing in Anvil Studio, but it was not devided and have no finger tips on the lcd I look for a perfect example for midi file have the sound, keys