Tubular bells (also known as chimes) are musical instruments in the percussion family. Their sound resembles that of church bells; the original tubular bells were made to duplicate the sound of church bells within an ensemble. Each bell is a metal tube, 30–38 mm (1¼–1½ inches) in diameter, tuned by altering its length. Its standard range is from C4-F5, though many professional instruments reach G5 (see photo).