An interesting topic. There seems to be quite the variety of notes associated with the assortment of horns being blown on all those engines.
How does the FRA define what constitutes a horn? Would a railroad (Shortline?) be able to have their own custom horn?
Fun little fact - The Glenn Miller Orchestra still performs as an outrageous 17 piece band. Go for Chattanooga Choo Choo - stay for the rest of the show.
I own a 3 chime Nathan, (hand delivered by a former TCA Prez), the plan is to put it on the wall in the entryway. Yes, my wife is fully on board (so to speak). I think some of the horns are as graceful as the engines they adorn.
Paul