Bar chimes

A mark tree (also known as a chime tree or set of bar chimes) is a percussion instrument used primarily for musical colour. It consists of many small chimes – typically cylinders of solid metal approximately 6 mm (one-quarter inch) in diameter – of varying lengths mounted hanging from a bar. The chimes are played by sweeping a finger or stick through the length of the hanging chimes. They are mounted in pitch order to produce rising or falling glissandos.