I was today looking for a recording I'd put on YouTube and got distracted by some videos of a computer engineer . . . and looking at her channel https://www.youtube.com/user/ContourCorsets discovered https://www.youtube.com/watch?v=VKWIX7LcV5Y which is a tour of the inside of the Wanamaker organ.
Isn't it great that music can attract an engineer?
Best wishes
David P