Flute hyperbass are other rare forms of the flute pitched two, three, and four octaves below middle C respectively. Other sizes of flutes and piccolos are used from time to time. A rarer instrument of the modern pitching system is the treble G flute. Instruments made according to an older pitch standard, used principally in wind-band music, include D piccolo, soprano flute (the primary instrument, equivalent to today's concert C flute), F alto flute, and B bass flute. The bamboo flute is an important instrument in Indian classical music, and developed independently of the Western flute. The Hindu God Lord Krishna
Irish flute Irish flute players tend to strive for a dark and reedy tone in comparison to classical flautists. Though most commonly pitched in the key of D, simple system flutes are available pitched in other keys, and are often heard in Irish music pitched in E flat, B flat and C. Although referred to as a D flute, this is a non-transposing instrument, so if you finger C, a concert-pitch C is sounded. The name D-flute comes from the fact that the simplest 6-hole wooden flute has D as its lowest note and plays the scale of D without any cross-fingering.