Castanets are pairs of shell-shaped clappers that are hinged together with string. A Spanish dancer holds a pair in each hand, clicking the clappers together rapidly to produce rhythmic patterns of sound to accompany the dance movements. Castanets are not used in flamenco dancing, however, as the rhythmic accompaniment is produced by stomping the feet.
The word castanet comes from castaina, the Spanish word for chestnut. Besides castainuelas, there are several other Spanish words for castanets, including pulgaretes (because some dancers attach them to their thumb, or pulgar) and platillos (saucers).
The classical technique for playing castanets is to let one clapper rest in the palm, with the string looped around the thumb. Striking the other clapper with the fingertips knocks it against its mate, producing a tone. Rapidly striking the clapper with a succession of different fingers on the dominant hand produces trills that embellish the sound and provide counter rhythms. The pair in the other hand (e.g., the left hand of a right-handed person) is played with single strokes to mark the basic rhythm of the music. An alternative technique, used by folkloric dancers, consists of looping the string around one or more fingers in the middle of the hand and flicking the wrist to throw the two clappers toward the palm, where they strike each other.
A pair of castanets should fit comfortably in the dancer's hand, so the diameter is about 1.5-2.75 in (4-7 cm). The smaller sizes, usually used by women, produce a higher tone that is crisper in quality; the larger sizes, usually used by men, produce a lower tone that is richer and more mellow in quality.
Mass-produced castanets made of poor-quality wood or plastic cost less than $10 a set. Custom-made sets that are handcrafted from high-quality material, such as hard-woods and composites, to suit an individual performer cost $100-400.
Musical instruments similar to castanets have been developed in many parts of the world. Ancient versions of small, wood or metal clappers were used by Egyptian, Greek, Roman, Arab, Moorish, and Chinese dancers, for example. It is not known whether such instruments were brought to Iberia (the region now known as Spain and Portugal), perhaps by the Greeks, or whether they developed independently in that region. Archaeological evidence indicates that Iberians made small clappers from sticks, shells, flat stones, and bone.
Novelty castanets have been made from ivory, marble, crystal, gold, silver, bronze, and aluminum, but few of these are musically useful. The traditional material used for good castanets has been very hard (but not brittle) wood such as granadillo, rosewood, ebony, pomegranate, or oak. The best hard-woods come from equatorial forests, and they are becoming quite expensive; some people prefer not to use them out of a sense of environmental consciousness.
Most professional-quality castanets are currently made from a synthetic, laminated material such as Micarta. Called tela de musica (cloth of music) by castanet makers, this material is made by applying heat and pressure to many layers of paper, cotton cloth, or glass-fiber cloth that have been impregnated with a phenolic resin. For the purposes of castanet making, this material is quite similar to high-quality ebony or granadillo.
Cotton strings are generally used to hinge together the two clappers of a pair of castanets. Nylon string can be used, especially by an orchestra musician; however, a dancer who keeps his or her arms up in the air while playing the castanets may find nylon strings too slippery.
Castanets are commonly shaped like a clam shell that is circular or slightly oval, with an extension on one side for the hinge holes. Occasionally, however, castanets are made in more novel shapes like squares, rectangles, or triangles.
Besides the overall size and the material from which they are made, another factor that influences the tone and sound quality of a pair of castanets is the size and depth of the hollows on the insides of the clappers. Also important is a good area of contact at the tips of the castanets, where the two clappers strike each other. Although some dancers prefer the two pairs of a set of castanets to have the same tone, it is traditional for one pair to produce a tone one-third lower than the other. This bass pair, called the macho or male pair, is played with the left hand to mark the beat of the music. The treble pair, called the hembra or female pair, is played with the right hand in a way that embellishes the music.
Several factors influence the degree of control a dancer has over the castanets when playing them in the classical manner. One is the exterior slope of the clappers—a steeper slope makes proper finger action easier. Other factors are the angle of the string holes and the curvature of the wood between the holes, where the bases of the two clappers rotate against each other when being played.
Castanets are sometimes used as a percussion instrument by orchestras rather than dancers. In this case, castanets may be mounted on wooden handles rather than being attached to the player's fingers or
Castanets may be either mass produced or individually hand crafted. The following steps describe the manual method, although a few comments compare this to mass production techniques.
When the two shells are practically finished, the maker tests them for sound quality. If necessary, they can be tuned by making the hollow deeper or broader.
In mass production, steps one through nine are largely automated. For example, a mechanical duplicator or a computer-programmed cutting tool may be used to create uniform exterior and interior curvatures according to a master design. Individual tuning is not necessary.
Lalagia. Spanish Dancing: A Practical Handbook. London: Dance Books, 1985.
La Meri [Russell Meriwether Hughes]. Spanish Dancing. Pittsfield, MA: Eagle Print and Binding Co., 1967.
LP Music Group. http:/www.bongo.com/ (June 7, 1999).
— Loretta Hall