Hi!
This piece was composed by Bach which I played on my EL700 organ at home. It has 2 keyboards and a pedal board. I have added a YouTube version of it on a real church organ having 3 keyboards and pedal board. Click on the Box link below to hear my version, then play the YouTube version below it in the usual way. Ken
https://app.box.com/s/i0h7pwk5x598mxtj66eujkcwn86y34m9