Bansuri is a side-blown flute that originated in India and used in Hindustani classical music. It is traditionally made from a single hollow shaft of bamboo with six or seven finger holes. This six-hole instrument covers two-and-a half octaves of music. They are typically between 30 centimetres and 75 centimetres in length, and the thickness of a human thumb. One end is closed, and few centimetres from the closed end is its blowhole. The musician creates the notes by tapping the various finger holes.