A clap is the

percussive A percussion instrument is a musical instrument that is sounded by being struck or scraped by a beater including attached or enclosed beaters or rattles struck, scraped or rubbed by hand or struck against another similar instrument. Exc ...

sound made by striking together two flat surfaces, as in the body parts of humans or animals. Humans clap with the palms of their hands, often quickly and repeatedly to express appreciation or approval (see

applause Applause (Latin ''applaudere,'' to strike upon, clap) is primarily a form of ovation or praise expressed by the act of clapping, or striking the palms of the hands together, in order to create noise. Audiences usually applaud after a performanc ...

), but also in

rhythm Rhythm (from Greek , ''rhythmos'', "any regular recurring motion, symmetry") generally means a " movement marked by the regulated succession of strong and weak elements, or of opposite or different conditions". This general meaning of regular re ...

as a form of

body percussion Body percussion may be performed on its own or as an accompaniment to music and/or dance. Examples of countries' folk traditions that incorporate body percussion include Indonesian saman, Ethiopian armpit music, palmas in flamenco, and the hambone ...

to match the sounds in

music Music is generally defined as the art of arranging sound to create some combination of form, harmony, melody, rhythm or otherwise expressive content. Exact definitions of music vary considerably around the world, though it is an aspe ...

, dance, chants,

hand game Hand games are games played using only the hands of the players. Hand games exist in a variety of cultures internationally, and are of interest to academic studies in ethnomusicology and music education. Hand games are used to teach music liter ...

s, and

clapping game A clapping game (or hand game) is a type of usually cooperative (i.e., non-competitive) game which is generally played by two players and involves clapping as a rhythmic accompaniment to a singing game or reciting of a rhyme, often nursery rh ...

s. Some people slap the back of one hand into the palm of the other hand to signify urgency or enthusiasm. This act may be considered uncouth by others. Clapping is used in many forms of music. In American music, clapping is popular in

Gospel Gospel originally meant the Christian message (" the gospel"), but in the 2nd century it came to be used also for the books in which the message was set out. In this sense a gospel can be defined as a loose-knit, episodic narrative of the words a ...

, Doo-wop and early Pop. In

flamenco Flamenco (), in its strictest sense, is an art form based on the various folkloric music traditions of southern Spain, developed within the gitano subculture of the region of Andalusia, and also having historical presence in Extremadura and ...

and

sevillanas ''Sevillanas'' () are a type of folk music and dance of Sevilla and its region. They were derived from the Seguidilla, an old Castilian folk music and dance genre. In the nineteenth century they were influenced by Flamenco. They have a relat ...

, two Spanish musical genres, clapping is called '' palmas'' and often sets the rhythm and is an integral part of the songs. A

sampled Sample or samples may refer to: Base meaning * Sample (statistics), a subset of a population – complete data set * Sample (signal), a digital discrete sample of a continuous analog signal * Sample (material), a specimen or small quantity of so ...

or synthesized clap is also a staple of

electronic Electronic may refer to: *Electronics, the science of how to control electric energy in semiconductor * ''Electronics'' (magazine), a defunct American trade journal *Electronic storage, the storage of data using an electronic device *Electronic co ...

and

pop music Pop music is a genre of popular music that originated in its modern form during the mid-1950s in the United States and the United Kingdom. The terms ''popular music'' and ''pop music'' are often used interchangeably, although the former descri ...

Musical works that include clapping

Classical works performed entirely by clapping * Steve Reich, ''

Clapping Music ''Clapping Music'' is a minimalist piece written by Steve Reich in 1972. It is written for two performers and is performed entirely by clapping. Reich and his ensemble were on tour in Europe in 1972. After a concert in Brussels, the promoter ...

'' (1972) * Robert Paterson, ''Voices'' (1988) *

Pascal Zavaro Pascal Zavaro (born 3 October 1959) is a French composer. Life Zavaro studied at the Conservatoire de Paris. In his music, rhythmic thinking is predominant. The sources are very broad, from rock, Bartók, Stravinsky or some scores of Steve ...

, ''Kino-Klap'' (2008) Classical works which include clapping * Carlos Surinach, ''Ritmo Jondo'' (1953) *

David Chesky David Chesky is an American pianist, composer, producer, arranger, and co-founder of the independent, audiophile label Chesky Records. He is also co-founder and CEO of HDtracks, an online music store that sells high-resolution digital music. Che ...

, ''Flute Concerto'' et ''Violin Concerto'' The clapping patterns known as

keplok Keplok is a style of clapping used in Javanese gamelan. The clapping is in a specific interlocking rhythmic pattern and is performed by the gerong when they are not singing. It is usually associated with the lively ciblon (Surakarta) or batanga ...

are important in Javanese

gamelan Gamelan () ( jv, ꦒꦩꦼꦭꦤ꧀, su, ᮌᮙᮨᮜᮔ᮪, ban, ᬕᬫᭂᬮᬦ᭄) is the traditional ensemble music of the Javanese, Sundanese, and Balinese peoples of Indonesia, made up predominantly of percussive instruments. T ...

. A type of synthesized clap is popular in many

rap Rapping (also rhyming, spitting, emceeing or MCing) is a musical form of vocal delivery that incorporates "rhyme, rhythmic speech, and street vernacular". It is performed or chanted, usually over a backing beat or musical accompaniment. The ...

and hip hop songs as well. This is derived from and mimics the technique used in older popular music (e.g. disco and funk of the 1970s), in which multiple instances of real handclaps were recorded or a single recording was made of a group of performers clapping in unison. This was usually done for the purpose of reinforcing the snare drum beat on the 2nd and 4th beats of the bar ( offbeat). Modern R&B, hip hop, and rap often omit the snare drum, making the claps a more obvious and central feature of the beat.

Acoustics and medical applications

Clapping is useful in (medical) opening up blocked blood circulation. Clapping can be used in acoustics to check the reverberation time of a room. This is determined by measuring the clap's

decay time In electronics, fall time (pulse decay time) t_f is the time taken for the amplitude of a pulse to decrease (fall) from a specified value (usually 90% of the peak value exclusive of overshoot or undershoot) to another specified value (usually 10 ...

. A recent contribution can be found in

Pedagogical applications

:''See:

Counting (music) In music, counting is a system of regularly occurring sounds that serve to assist with the performance or audition of music by allowing the easy identification of the beat. Commonly, this involves verbally counting the beats in each measure as ...

.'' Clapping is often used to help people recognize the rhythm in sounds. It can be used to help musicians count out rhythms. It is also used to teach

phonological awareness Phonological awareness is an individual's awareness of the phonological structure, or sound structure, of words. Phonological awareness is an important and reliable predictor of later reading ability and has, therefore, been the focus of much res ...

to students learning the ways words are constructed. They often clap out syllables to learn to break words into their component sounds.

Sports and other pursuits

Iceland at the UEFA European Championship during

UEFA Euro 2016 The 2016 UEFA European Football Championship, commonly referred to as UEFA Euro 2016 (stylised as UEFA EURO 2016) or simply Euro 2016, was the 15th UEFA European Championship, the quadrennial international men's football championship of Europe ...

, Iceland's fans became widely known for their 'volcano clap' (or 'Viking clap') with a 'huh' chant, though it originated with fans of Scottish club

Motherwell F.C. Motherwell Football Club is a Scottish professional football club based in Motherwell, North Lanarkshire, which plays in the Scottish Premiership. Motherwell have not dropped out of the top-flight of Scottish football since 1985, and have l ...

Canberra Raiders The Canberra Raiders are an Australian professional rugby league football club based in the national capital city of Canberra, Australian Capital Territory. They have competed in Australasia's elite rugby league competition, the National Rugby ...

fans subsequently adopted the 'Viking clap'. Similarly, fans of the

Minnesota Vikings The Minnesota Vikings are a professional American football team based in Minneapolis. They compete in the National Football League (NFL) as a member club of the National Football Conference (NFC) North division. Founded in 1960 as an expansi ...

have also adopted the 'Viking clap' to show support for the team, chanting 'skol' rather than the original 'huh' chant. The term "clap hands" or "clap hands Charlie" is also used in aviation to mean an aircraft collision or wing-to-wing contact, the phrase being derived from the refrain in the popular song "

Clap Hands! Here Comes Charley! ''Clap Hands! Here Comes Charley!'' is a popular song that was written by Billy Rose, Ballard MacDonald and Joseph Meyer and was first published in 1925. The song was recorded by several popular singers of the era, including a version by Billy M ...

" In the mid 2010s, a practice of clapping as a way to emphasize talking points emerged among African American women, especially when clapping out individual syllables in words. This was pointed out in popular media by the comedian

Robin Thede Robin Thede ( ) is an American comedian, actress and writer. Raised in Iowa, she has also worked as an entertainment correspondent, host, and radio personality. In 2015, she became the first African-American woman to be head writer for a late- ...

The Nightly Show with Larry Wilmore ''The Nightly Show with Larry Wilmore'' is a 2015–16 American Late night television, late-night panel discussion, panel Late-night talk show, talk show hosted by Larry Wilmore that aired for two seasons on Comedy Central. The show was a spin-o ...

. It has since become more widely applied both online, often using the "hand clap" emoji, and in person.

Notes

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References