own below, following the deep bellow the echoed through the staircase, we found a strange, intricate, brass instrument. It was placed upon a large pedestal in the center of the room, and connected to bellows. It's pipes looped around each other, making it difficult to see where one ended and the next started. Two clamps held a large sliding valve, which moved back and forth, operated by air pressure.
It wasn't a trombone or sousaphone, but this instrument was most certainly inspired by their workings.