A blind organist, Ulysses likes to play Jesu Joy of Man's Desiring, from cantata BWV 147 by J.S. Bach. He uses either Braille or his perfect pitch to pick up music from online videos. In order to help him master this beautiful piece, today I prepared a version of it in 7 combinations (right hand, left hand, pedals, right hand and left hand, right hand and pedals, left hand and pedals, and all three parts together) for him to listen to and practice.
Some people who are not blind also like watching my videos and practicing together with the recording in half speed. If you like practicing BWV 147/10 while listening to the sound file, you can join Ulysses in listening to this MIDI file of the score performed in a very slow practice tempo. Let me know if this helps.