Very cute, Al! Very cute indeed.
For a more detailed and historical view (and listen), I recommend
this multi-part video at YouTube. It's E. Power Biggs describing the evolution of the organ as an instrument and features quite a few different instruments from around the world. The differences in voicing are rather remarkable.
As an addendum to this post, I'll refer the reader to
Abide With Me performed on what may be the worlds largest and most complex musical instrument. It's good in headphones, but when I put it on my "big system" for the first time it positively stunned me.
When I spec'ed out my "big system" 30+ years ago I wanted it to be a general purpose machine capable of soaring to the highest highs and plumbing to the deepest lows, but I never anticipated that it'd be able to deal with what the clip above threw at it. Towards the end, there's a 64 foot organ register in action; one cannot hear it because one feels it. I could watch the woofer cones moving in and out in a very controlled manner. In a word, it's mind-blowing; one can only imagine being in the hall with such an instrument.
Too, the words in the final frame ring so very true: "Most people live and die with their music still unplayed. They never dare to try." I wonder if truer words have ever been written.
With tears in my eyes, it's time to put the chickens back in their coops...