Please answer the following question: Information: - Call and response is a form of "spontaneous verbal non-verbal interaction between speaker and listener in which all of the statements ('calls') are punctuated by expressions ('responses') from the listener." It falls in the general category of antiphony. - A valve is a device that regulates, directs or controls the flow of a fluid (gases, liquids, fluidized solids, or slurries) by opening, closing, or partially obstructing various passageways. Valves are technically fittings, but are usually discussed as a separate category. In an open valve, fluid flows in a direction from higher pressure to lower pressure. The word is derived from the Latin "valva", the moving part of a door, in turn from "volvere", to turn, roll. - A piston valve is a device used to control the motion of a fluid along a tube or pipe by means of the linear motion of a piston within a chamber or cylinder. - The Superbone is a hybrid trombone. It has the slide mechanism of a standard trombone and the valve mechanism of a valve trombone. Larry Ramirez of the Holton instrument company built the model TR 395 Superbone in the seventies in collaboration with Maynard Ferguson. - A brass instrument is a musical instrument that produces sound by sympathetic vibration of air in a tubular resonator in sympathy with the vibration of the player's lips. Brass instruments are also called "labrosones", literally meaning "lip-vibrated instruments". - The trombone is a musical instrument in the brass family. Like all brass instruments, sound is produced when the player's vibrating lips (embouchure) cause the air column inside the instrument to vibrate. Nearly all trombones have a telescoping slide mechanism that varies the length of the instrument to change the pitch. Many modern trombone models also utilize a rotary valve as a means to lower pitch of the instrument. Variants such as the valve trombone and superbone have three valves like those on the trumpet. - A baritone is a type of classical male singing voice whose vocal range lies between the bass and the tenor voice types. It is the most common male voice. Originally from the Greek , meaning "deep (or heavy) sounding", music for this voice is typically written in the range from the second F below middle C to the F above middle C (i.e. FF) in choral music, and from the second A below middle C to the A above middle C (A to A) in operatic music, but can be extended at either end. The baritone voice type is generally divided into the baryton-Martin baritone (light baritone), lyric baritone, "Kavalierbariton", Verdi baritone, dramatic baritone, "baryton-noble" baritone, and the bass-baritone. - The euphonium is a large, conical-bore, baritone-voiced brass instrument that derives its name from the Ancient Greek word "euphnos", meaning "well-sounding" or "sweet-voiced" ("eu" means "well" or "good" and "phn" means "sound", hence "of good sound"). The euphonium is a valved instrument; nearly all current models are piston valved, though rotary valved models do exist. The euphonium is a non-transposing instrument known for its distinctive tone color. A person who plays the euphonium is sometimes called a "euphoniumist", "euphophonist", or a "euphonist", while British players often colloquially refer to themselves as "euphists", or "euphologists." Similarly, the instrument itself is often referred to as "eupho" or "euph". - The baritone horn, or sometimes just called baritone, is a low-pitched brass instrument in the saxhorn family. It is a piston-valve brass instrument with a bore that is mostly conical, like the flugelhorn and alto (tenor) horn, but is narrower than the conical bore of the euphonium. It uses a wide-rimmed cup mouthpiece like that of its peers, the trombone and euphonium. Like the trombone and the euphonium, the baritone horn can be considered either a transposing or non-transposing instrument. - A rotary valve is a type of valve in which the rotation of a passage or passages in a transverse plug regulates the flow of liquid or gas through the attached pipes. The common stopcock is the simplest form of rotary valve. Rotary valves have been applied in numerous applications, including: - The saxhorn is a family of valved brass instruments that have conical bores and deep cup-shaped mouthpieces. The saxhorn family was developed by Adolphe Sax, who is also known for creating the saxophone family. The sound of the saxhorn has a characteristic mellow tone quality and blends well with other brass. - The flugelhorn (also spelled fluegelhorn, flugel horn, or Flugelhornfrom German, "wing horn," ) is a brass instrument pitched in B, and resembles a trumpet, but has a wider, conical bore. The instrument known today as the flugelhorn was developed from the valved bugle and is a member of the saxhorn family, which was developed by Adolphe Sax, who also created the saxophone family. The modern flugelhorn and Sax's B soprano (contralto) saxhorn are practically the same instrument. - The embouchure is the use of facial muscles and the shaping of the lips to the mouthpiece of woodwind instruments or the mouthpiece of the brass instruments. The word is of French origin and is related to the root "bouche" (fr.), 'mouth'. The proper embouchure allows the instrumentalist to play the instrument at its full range with a full, clear tone and without strain or damage to one's muscles. - The double bell euphonium is an instrument based on the euphonium . The larger bell produces the mellow tone of a standard euphonium ; the second smaller bell has a brighter tone , similar to a baritone horn or valve trombone . The instrument is sometimes dismissed as a novelty , but has had a small number of enthusiastic adherents , although few professional musicians use it as their sole or primary instrument . The smaller bell can give more appropriate tone in the higher range of the instrument . The two bells can also be used for special effects , such as echoes , and using the distinctly different tone of the two bells for a single musician to give the effect of call and response . - A trumpet is a musical instrument commonly used in classical and jazz ensembles. The trumpet group contains the instruments with the highest register in the brass family. Trumpet-like instruments have historically been used as signaling devices in battle or hunting, with examples dating back to at least 1500 BC; they began to be used as musical instruments only in the late-14th or early 15th century. Trumpets are used in art music styles, for instance in orchestras, concert bands, and jazz ensembles, as well as in popular music. They are played by blowing air through almost-closed lips (called the player's embouchure), producing a "buzzing" sound that starts a standing wave vibration in the air column inside the instrument. Since the late 15th century they have primarily been constructed of brass tubing, usually bent twice into a rounded rectangular shape. - A transposing instrument is a musical instrument whose music is notated at a pitch different from the pitch that actually sounds (concert pitch). Playing a written C on a transposing instrument produces a pitch other than C, and that pitch identifies the interval of transposition when describing the instrument. For example, a written C on a B clarinet sounds a concert B. What is the relationship between 'double bell euphonium' and 'musical instrument'?
A:
subclass of