Ipu is a percussion instrument made from gourd

Gourd

A gourd is a plant of the family Cucurbitaceae. Gourd is occasionally used to describe crops like cucumbers, squash, luffas, and melons. The term 'gourd' however, can more specifically, refer to the plants of the two Cucurbitaceae genera Lagenaria and Cucurbita or also to their hollow dried out shell...

s that is often used to provide a beat for hula

Hula

Hula is a dance form accompanied by chant or song . It was developed in the Hawaiian Islands by the Polynesians who originally settled there. The hula dramatizes or portrays the words of the oli or mele in a visual dance form....

 dancing.

There are two types of ipu, the ipu heke (ˈ) and the ipu heke ole (ˈ). Both are made from gourds that have been cut off at the neck and hollowed. The ipu heke is two such gourds joined together with a hole cut in the top to allow the sound to escape. Ipu are usually polished smooth with sand

Sand

Sand is a naturally occurring granular material composed of finely divided rock and mineral particles.The composition of sand is highly variable, depending on the local rock sources and conditions, but the most common constituent of sand in inland continental settings and non-tropical coastal...

 or sandpaper

Sandpaper

Sandpaper, also known as glasspaper, is a heavy paper with abrasive material attached to its surface.Sandpaper is part of the "coated abrasives" family of abrasive products. It is used to remove small amounts of material from surfaces, either to make them smoother , to remove a layer of material...

.

Chants and dances in ancient Hawaii

Ancient Hawaii

Ancient Hawaii refers to the period of Hawaiian human history preceding the unification of the Kingdom of Hawaii by Kamehameha the Great in 1810. After being first settled by Polynesian long-distance navigators sometime between AD 300–800, a unique culture developed. Diversified agroforestry and...

 were accompanied only by percussion instruments. This art was suppressed after the arrival of Christian Missionaries in 1820, but revived under King David Kalākaua

Kalakaua

Kalākaua, born David Laamea Kamanakapuu Mahinulani Nalaiaehuokalani Lumialani Kalākaua and sometimes called The Merrie Monarch , was the last reigning king of the Kingdom of Hawaii...

 during his reign of 1874 to 1891.

One form of Ipu art developed solely on the island of Niihau

Niihau

Niihau or Niihau is the seventh largest of the inhabited Hawaiian Islands in the U.S. state of Hawaii, having an area of . Niihau lies southwest of Kauai across the Kaulakahi Channel. Several intermittent playa lakes provide wetland habitats for the Hawaiian Coot, the Black-winged Stilt, and the...

. In this method, a design is carved in the skin of a fresh gourd, after which the gourd is filled with dye

Dye

A dye is a colored substance that has an affinity to the substrate to which it is being applied. The dye is generally applied in an aqueous solution, and requires a mordant to improve the fastness of the dye on the fiber....

or other liquid coloring agent which, allowed to remain in the gourd for several weeks, changes the color of the uncarved portions of the surface of the gourd where its skin has remained intact.