The Kuhlohorn (also Kuhlo-Flügelhorn) is a thin Flügelhorn (musical instrument), traditionally in B flat. This is a specially designed brass wind-instrument played using a deep bowled mouth piece. Chief characteristics are its oval design and integrated, usually conical tubing.
Johannes Kuhlo found the unique sound ideal for a cappella brass choirs (Posaunenchöre). He therefore preferred and recommended these special instruments (horns, tubas) instead of traditional trumpets. The first of these instruments were developed in collaboration with the Bielefelder instruments maker, Ernst David.