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
Western concert flute Blavet, Vivaldi, and Handel. Because of the works of such composers, the flute became popular as a solo instrument. However, there were few professional flutists who had the flute as their main instrument; many had the oboe. In 1707, Jacques Martin Hotteterre wrote the first method book on playing the flute: "Principes de la flûte traversière". The 1730s brought an increase in operatic and chamber music feature of flutes. The end of this era found the publication of "Essay of a Method of Playing the Transverse Flute" by Quantz. The orchestras formed in the last half of the 18th century