The purerehu, or rangorango (named after its buzzing sound like that of the rango or blowfly) is a bullroarer.
The purerehua belongs to the wind family of instruments.
The kaitiaki (guardian) of the purerehua is Tawhirimatea, God of the Winds.
The purerehua takes its name from the moth. Its sound is similar to the whirling and hovering sound of a moths wings as it flys and flits.
The beauty of the sound that emanates from the purerehua is in its ability to stir the soul and whirl in the deepest places of the heart, giving rise to emotion and awe.
Traditionally, Maori used purerehua for a variety of different purposes. It is said that as the purerehua begins its flight, the spirit of the player (all their thoughts and feelings) would travel up the cord to create the sound and then it would travel beyond the instrument taking the dreams and wawata (desires) of the player to the listeners of this world and beyond, up to the heavens. Therefore, the purerehua is a tool for communicating to others both inside and outside the earthly realm.
Other purposes of the purerehua: Some iwi used it to call the rains to help their crops. In the south purerehua were used to bring moko (lizards) out of hiding. Purerehua are also used in lament and farewell of the dead.
Purerehua are made from many different materials:- Bone, wood and stone. They come in a variety of sizes with usually unique korero or surface carving.