What brass instruments start with the letter H?

Brass instruments that start with the letter "H" include the horn, specifically the French horn, and the euphonium, sometimes referred to as a "baritone horn" in certain contexts. The horn is known for its circular shape and rich, warm tone, while the euphonium has a more conical bore and a mellow sound. Another lesser-known instrument is the helicon, a tuba-like instrument often used in Marching Bands.