0_Wizard
My brother is dexterous in playing trumpet is a brass instrument 
A trumpet is a brass instrument commonly used in classical and jazz ensembles.
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Trumpet
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Brass instrument
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". There are several factors involved in producing different pitches on a brass instrument. Slides, valves, crooks (though they are rarely used today), or keys are used to change vibratory length of tubing, thus changing the available harmonic series, while the player's embouchure, lip tension and air flow serve to select the specific harmonic produced from the available series.
Trumpet
A trumpet is a brass 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 nearly-closed lips (called the player's embouchure), producing a "buzzing" sound that starts a standing wave vibration in the air column inside the instrument.
Euphonium
The euphonium is a large, conical-bore, baritone-voiced brass instrument that derives its name from the Ancient Greek word "euphōnos", meaning "well-sounding" or "sweet-voiced" ( "eu" means "well" or "good" and "phōnē" 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. Outside of Brass Bands (in the British tradition where the instrument plays in B♭ and in treble clef) the euphonium is a non-transposing instrument. 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."
Saxophone
The saxophone (also referred to as the sax) is a family of woodwind instruments. Saxophones are usually made of brass and played with a single-reed mouthpiece similar to that of the clarinet. Like the clarinet, saxophones have holes in the instrument which the player closes using a system of key mechanisms. When the player presses a key, a pad either covers a hole or lifts off a hole, lowering or raising the pitch, respectively. The saxophone family was invented by the Belgian instrument maker Adolphe Sax in 1840. Adolphe Sax wanted to create a group or series of instruments that would be the most powerful and vocal of the woodwinds, and the most adaptive of the brass instruments, that would fill the vacant middle ground between the two sections.
Cornet
The cornet (, ) is a brass instrument similar to the trumpet but distinguished from it by its conical bore, more compact shape, and mellower tone quality. The most common cornet is a transposing instrument in B, though there is also a soprano cornet in E. Both are unrelated to the renaissance and early baroque cornett. The cornet derived from the posthorn by applying rotary valves to it in the 1820s in France. By the 1830s, however, Parisian makers were using piston valves instead. Among the first manufacturers of modern cornets was Parisian Jean Asté in 1828. Cornets first appeared as separate instrumental parts in 19th century French compositions.
French horn
The French horn (since the 1930s known simply as the "horn" in some professional music circles) is a brass instrument made of tubing wrapped into a coil with a flared bell. The double horn in F/B (technically a variety of German horn) is the horn most often used by players in professional orchestras and bands. A musician who plays any kind of horn is generally referred to as a horn player (or less frequently, a hornist). Pitch is controlled through the combination of the following factors: speed of propulsion of air through the instrument (controlled by the player's lungs and thoracic diaphragm); diameter and tension of lip aperture (controlled by the player's lip muscles—the embouchure) in the mouthpiece; plus, in a modern French horn, the operation of valves by the left hand, which route the air into extra sections of tubing.
Horn (instrument)
A horn is any of a family of musical instruments made of a tube, usually made of metal and often curved in various ways, with one narrow end into which the musician blows, and a wide end from which sound emerges. In horns, unlike some other brass instruments such as the trumpet, the bore gradually increases in width through most of its length—that is to say, it is conical rather than cylindrical. In jazz and popular-music contexts, the word may be used loosely to refer to any wind instrument, and a section of brass or woodwind instruments, or a mixture of the two, is called a horn section in these contexts.
1_Apprentice
A trumpet seems like a difficult instrument to master.