Following up on last week's weirdo, another brass band instruments named after their French designer (who patented it in 1892). Looks pretty funky, with everything bent up to lie along the body, with a sound much like a saxhorn -- which probably explains why it is hardly heard-of today. One unique feature was a membrane near the mouthpiece that could be used to change the tone of the note.
In the back of the shop, we found a contraption he called a sudrophone, and he proceeded to demonstrate what it sounded like at interminable length.
---L.