An '''orchestra''' is an ensemble of musicians, led by a director. Orchestras are used frequently in western [[classical music]] and often have the [[instrument]]s divided into sections. A product of over 400 years of development, the modern symphony orchestra is made up of four groups of instruments - strings, woodwind, brass and percussion. | An '''orchestra''' is an ensemble of musicians, led by a director. Orchestras are used frequently in western [[classical music]] and often have the [[instrument]]s divided into sections. A product of over 400 years of development, the modern symphony orchestra is made up of four groups of instruments - strings, woodwind, brass and percussion. |