Triangle (musical instrument)
The triangle is a musical instrument in the percussion family, classified as an idiophone in the Hornbostel-Sachs classification system. Triangles are made from a variety of metals including aluminum, beryllium copper, brass, bronze, iron, and steel. 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. The triangle theoretically has indefinite pitch, and produces a plurality of overtones when struck with an appropriate beater.
Triangle (musical instrument)
A young orchestral musician plays an Alan Abel triangle.
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.
Orchestral percussion section with timpani, unpitched auxiliary percussion and pitched tubular bells
Djembé and balafon played by Susu people of Guinea
Concussion idiophones (claves), and struck drums (conga drum)
Modern Japanese taiko percussion ensemble