I recently resotred an old silver plated cornet, it was my great uncles, made by the Boston musical instrumet company. i know very little about the horn, my uncle was a reed player himself, but i knew he taught himself to play on it, and used it in a jazz band. as best i know it is in the key of G, but that includes a huge removalbe lead pipe. if anyone can tell me nething, give me a hollar