https://www.youtube.com/watch?v=JeB3JnKp8To
Can anyone find a specification?
Google 'Fourth Presbyterian Church, Chicago' and it is here:
https://www.fourthchurch.org/music/organ/tonal-specifications.html
I remember years ago seeing a video about a performance at the Melbourne town hall where someone played the pipe organ using a program called Kinect that allows you to create music through conducting.
https://www.youtube.com/watch?v=xEMbjnTJCHM