Fire Organ - how to roast 100 marshmallows at a time

At what point did someone wake and say "I know, fire coming out of the pipes of an organ while I am playing". I guess playing an organ on its own was relatively safe and boring so they had to add some fire to the organ for some kick. I wonder what Beethoven would have said about all this, by the sound of it on the video not much. But this fire organ rocks and would be a hit at any party, any were, any time. I would rent it for my next birthday party in a second. You can also roast a ton of marshmallows at the same time on camping trips.

Fire Organ By Night