Claves in the context of Fibreglass

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. Excluding zoomusicological instruments and the human voice, the percussion family is believed to include the oldest musical instruments. In spite of being a very common term to designate instruments, and to relate them to their players, the percussionists, percussion is not a systematic classificatory category of instruments, as described by the scientific field of organology. It is shown below that percussion instruments may belong to the organological classes of idiophone, membranophone, aerophone and chordophone.

The percussion section of an orchestra most commonly contains instruments such as the timpani, snare drum, bass drum, tambourine, belonging to the membranophones, and cymbals and triangle, which are idiophones. However, the section can also contain aerophones, such as whistles and sirens, or a blown conch shell. Percussive techniques can even be applied to the human body itself, as in body percussion. On the other hand, keyboard instruments, such as the celesta, are not normally part of the percussion section, but keyboard percussion instruments such as the glockenspiel and xylophone (which do not have piano keyboards) are included.

An idiophone is any musical instrument that creates sound primarily by the vibration of the instrument itself, without the use of air flow (as with aerophones), strings (chordophones), membranes (membranophones) or electricity (electrophones). It is the first of the four main divisions in the original Hornbostel–Sachs system of musical instrument classification (see List of idiophones by Hornbostel–Sachs number). The early classification of Victor-Charles Mahillon called this group of instruments autophones. The most common are struck idiophones, or concussion idiophones, which are made to vibrate by being struck, either directly with a stick or hand (like the wood block, singing bowl, steel tongue drum, handpan, triangle or marimba) or indirectly, with scraping or shaking motions (like maracas or flexatone). Various types of bells fall into both categories. A common plucked idiophone is the Jew's harp.

According to Sachs, idiophones

The rhythm band is one of the primary methods of introducing children to playing music. Children are given maracas, tambourines, bells, rhythm sticks and other idiophones with which to beat out a simple rhythm while the teacher plays a song, usually on the piano. Alternatively, the teacher does not play a melody but also a rhythm instrument, so that only rhythms are played. Children can also make a rhythm band "just for fun" for themselves, without a teacher. Rhythm bands are typically found in nursery schools or kindergartens, but of course children also can make a rhythm band at home. Melodic instruments are introduced to the children in the first or second year of regular school. But in principle, a rhythm band can be made in every age, with more difficult rhythms if the participants are older.If the participants like very loud music, noisemakers like the pea whistle, the recorder head joint, the vuvuzela or the ratchet can be included into the rhythm band, as well as other loud rhythm instruments like the snare drum.

American composer J. Lilian Vandevere wrote many pieces for rhythm band and toy orchestra. She and American educators Gladys Marie Stein and Satella Waterstone also wrote articles and textbooks about their use in music education.

The Trío Matamoros was a Cuban trova group. It was formed in 1925 by Miguel Matamoros (8 May 1894 in Santiago de Cuba – 15 April 1971; guitar), Rafael Cueto (14 March 1900 in Santiago de Cuba – 7 August 1991; guitar) and Siro Rodríguez (9 December 1899 in Santiago de Cuba – Regla, 29 March 1981; maracas and claves). All three were singers and composers. The group was originally called Trio Oriental, but changed their name to Trio Matamoros in 1928 after finding that a group called Trio Oriental already existed.

The Trío Matamoros played boleros and son. They toured all Latin America and Europe and recorded in New York. In 1940 Guillermo Portabales performed with the trio. Matamoros expanded the trio into a conjunto (Conjunto Matamoros) for a trip to Mexico and hired the young Beny Moré as singer from 1945 to 1947. They recorded many 78 rpm records and LPs; some of their output is available on CDs. The group were critically acclaimed for the harmony of their voices, and the quality of the lyrics.