The term TYPE OF HORN can refer to two different instruments, a BUGLE and a fluegel. A BUGLE is a brass instrument that is typically used in military and ceremonial contexts. It is usually played without valves or keys, and produces only the notes of the harmonic series. A fluegel is a type of horn that is similar to a trumpet, but with a wider bore and a more mellow sound. It is often used in jazz and classical music.