The triangle, or musical triangle, is a
musical instrument
A musical instrument is a device created or adapted to make Music, musical sounds. In principle, any object that produces sound can be considered a musical instrument—it is through purpose that the object becomes a musical instrument. A person ...
in the
percussion family, classified as an
idiophone in the
Hornbostel-Sachs classification system. Triangles are made from a variety of
metal
A metal () is a material that, when polished or fractured, shows a lustrous appearance, and conducts electrical resistivity and conductivity, electricity and thermal conductivity, heat relatively well. These properties are all associated wit ...
s including
aluminum
Aluminium (or aluminum in North American English) is a chemical element; it has chemical symbol, symbol Al and atomic number 13. It has a density lower than that of other common metals, about one-third that of steel. Aluminium has ...
,
beryllium copper,
brass,
bronze,
iron, and
steel
Steel is an alloy of iron and carbon that demonstrates improved mechanical properties compared to the pure form of iron. Due to steel's high Young's modulus, elastic modulus, Yield (engineering), yield strength, Fracture, fracture strength a ...
. The metal is bent into a
triangular shape with one open end. The instrument is usually held by a loop of some form of thread or wire at the top curve to enable the triangle to vibrate, and it is struck with a metal rod called a "beater". The triangle theoretically has
indefinite pitch, and produces a plurality of overtones when struck with an appropriate beater.
History
Iconography is the primary source for knowledge of the history of the triangle, and provides insight into the musical and social context in which the instrument developed.
Some scholars believe the triangle to be a direct descendant of the ancient Egyptian
sistrum. Others do not go quite so far, referring to the triangle as being "allied" with the sistrum throughout history, but not a direct descendant.
Like the sistrum, the triangle, as seen in iconography, has its origins in religious settings.
The triangle is used as a liturgical instrument in the rites of the
Coptic Church based in Egypt and the
Syro-Malabar Church based in
Kerala, India.
For decades, it was thought that the first iconographic witness of a triangle came from a 9th-century manuscript held at
Emmeram of Regensburg, through longstanding writings by
James Blades and others, although recent scholarship does not share this view.
In the 14th century, early depictions of the triangle emerge from Western
Christian iconography.
From that time forward, the triangle is seen in iconography through the centuries, in a variety of sizes, and sometimes having jingling rings hanging from its rungs.
Triangles are depicted as having an open corner with the ends not touching, and also as having with fully closed corners; the sides are sometimes slightly curved.
Triangles are also in shapes that are not quite triangular, such as trapezoids and stirrup shapes.
The first known use of the ''written'' term “triangle” occurs in an inventory list of the musical instruments owned by the kapelle in
Wurttemberg, Germany. The list was compiled by
Balduin Hoyoul in 1589, over two hundred years after the iconographic emergence of the triangle in the fourteenth century.
Around the eighteenth century, the use of the triangle began to expand; its sound started to bring about new musical connotations and associations. Influenced by ambassadorship, diplomacy, “''
Turquerie''” and the new sounds of their own military bands, European operatic and orchestral composers began to incorporate the triangle as a means of ''emulating'' the sounds of the ''
mehterân''—the metallic sounds of the ''
zil'' and ''
cevgen'', combined with the rhythmic pulse of the ''
kös'', ''
davul'', and ''
nakkare''.
The early use of the triangle in an operatic/orchestral setting was often not notated, and simply performed by ear.
When a triangle part ''was'' notated, it was in steady, repetitive figures providing a march-like character. The triangle was the ''available'' instrument in Europe for composers to write rhythmically, and with a metallic color.
However, the triangle was ''not'' used in functional ''mehter'' music, nor was it used by
Janissaries or ''mehteran'' while providing music for battle.
In the early nineteenth century,
Romantic-era composers began to seek new colors, and explored the sustaining qualities of the triangle.
[Beck, J. H. (2013). Encyclopedia of Percussion. United States: Taylor & Francis. (pg. 397)] Preference was given towards a long, sustaining sound that only triangles ''without'' rings could provide.
Thus, the jingling rings associated with the triangle for five centuries prior, fell out of use.
Shaping and manufacturing

The modern triangle is
eponymously named after the
triangle, though one of the angles is left open with the ends of the bar not quite touching. This opening is used to keep the instrument from having a definite
pitch, creating many rich
overtones. It is generally suspended from one of the other corners, commonly by a piece of
nylon fishing line, leaving it free to vibrate. Early examples of triangles include ornamental work at the open end, often in a scroll pattern.
In modern times, the scroll pattern has been abandoned and triangles are made from either steel or brass.
Technique
The triangle is often the subject of
jokes and
one-liners, as an archetypal instrument that seemingly has no musical function and requires no skill to play (the
Martin Short character
Ed Grimley is an example). However, triangle parts in classical music can be very demanding, and
James Blades in the ''
Grove Dictionary of Music and Musicians'' writes that "the triangle is by no means a simple instrument to play".
The triangle is typically suspended from a triangle clip that suspends the triangle so that it is free to vibrate. When the instrument is played with one beater, the hand that holds the triangle clip can also be used to damp or slightly modify the sound. The triangle is usually struck with a metal beater, giving a high-pitched, ringing tone. For complex, rapid rhythms, the instrument may be suspended from a stand using two clips, and played with two beaters, although this makes it more difficult to control. Most difficulties in playing the triangle come from the complex rhythms which are sometimes written for it, and it can also be quite difficult to control the level of volume. Very quiet notes can be obtained by using a much lighter beater; knitting needles are sometimes used as well. Composers sometimes call for wooden beaters to be used instead of a metal one, producing a unique tone.
A triangle roll, similar to a
snare roll, is notated with three lines through the stem of the note. It requires the player to quickly move the beater back and forth in either the upper or lower corner, moving the beater quickly between the two sides.
Musical styles
Classical music
In
European classical music
Classical music generally refers to the art music of the Western world, considered to be #Relationship to other music traditions, distinct from Western folk music or popular music traditions. It is sometimes distinguished as Western classical mu ...
, the triangle has been used in the western classical
orchestra since around the middle of the 18th century.
Wolfgang Amadeus Mozart,
Joseph Haydn and
Ludwig van Beethoven
Ludwig van Beethoven (baptised 17 December 177026 March 1827) was a German composer and pianist. He is one of the most revered figures in the history of Western music; his works rank among the most performed of the classical music repertoire ...
all used it, though sparingly, usually in imitation of
Janissary bands.
The earliest writing for the triangle is found in
Cristoph Willibald Gluck's operas Der betrogene Kadi (1761) and ''
La Cythère Assiégée'' (1775)
''.'' The first piece to use the triangle prominently was
Franz Liszt's
Piano Concerto No. 1 in E♭ major, where it is used as a solo instrument in the third movement, giving this concerto the nickname of "triangle concerto". In
Romantic era music, the triangle was used in some music by
Richard Wagner
Wilhelm Richard Wagner ( ; ; 22 May 181313 February 1883) was a German composer, theatre director, essayist, and conductor who is chiefly known for his operas (or, as some of his mature works were later known, "music dramas"). Unlike most o ...
, such as the "
Bridal Chorus" from ''
Lohengrin''.
Johannes Brahms
Johannes Brahms (; ; 7 May 1833 – 3 April 1897) was a German composer, virtuoso pianist, and conductor of the mid-Romantic period (music), Romantic period. His music is noted for its rhythmic vitality and freer treatment of dissonance, oft ...
uses the triangle to a particular effect in the third movement of his
Fourth Symphony, the only appearance of non-timpani percussion in a Brahms symphony.
Albert Lortzing used triangles in the opening of his opera ''
Der Waffenschmied'' to mimic the sound of hammers in a blacksmith's shop.
Folk and popular music

In
folk music
Folk music is a music genre that includes #Traditional folk music, traditional folk music and the Contemporary folk music, contemporary genre that evolved from the former during the 20th-century folk revival. Some types of folk music may be ca ...
,
forró,
Cajun music
Cajun music (), an emblematic music of Louisiana played by the Cajuns, is rooted in the ballads of the French-speaking Acadians of Canada. Although they are two separate genres, Cajun music is often mentioned in tandem with the Creole-based ...
and
rock music
Rock is a Music genre, genre of popular music that originated in the United States as "rock and roll" in the late 1940s and early 1950s, developing into a range of styles from the mid-1960s, primarily in the United States and the United Kingdo ...
a triangle is often held directly in the hand so that one side can be damped by the fingers to vary the tone. The sound can also be changed slightly by varying the area struck, and by subtle damping.
The triangle (known in
Cajun French as a ‘tit-fer, from ''petit fer'', "little iron") is popular in
Cajun music
Cajun music (), an emblematic music of Louisiana played by the Cajuns, is rooted in the ballads of the French-speaking Acadians of Canada. Although they are two separate genres, Cajun music is often mentioned in tandem with the Creole-based ...
where it serves as the strong beat, especially if no drums are present.
In the Brazilian music style
Forró it is used together with the
zabumba (a larger drum) and an
accordion. It forms together with the
zabumba the rhythmic section. It provides usually an ongoing pulse, damping the tone on the first second and fourth while opening the hand on the third beat to let most frequencies sound. It can be used extensively for breaks, to improvise, and to vary the rhythm.
In Indonesian folk music such as
Banyuwangi Gandrung music, triangle is used together with gamelan. It is locally called ''kluncing'' in
Osing language.
References
{{Authority control
Stick percussion idiophones
Orchestral percussion instruments
Cajun musical instruments
Percussion instruments played with specialised beaters
Unpitched percussion instruments
Early musical instruments
Hand percussion
Concert band instruments