Information about Didgeridoo

''For the Aphex Twin single of the same name see Digeridoo (single)

The didgeridoo (or didjeridu) is a wind instrument of the Indigenous Australians of northern Australia. It is sometimes described as a natural wooden trumpet or "drone pipe". Musicologists classify it as an aerophone.

A didgeridoo is usually cylindrical or conical in shape and can measure anywhere from 1 to 2 meters in length with most instruments measuring around 1.2 meters. Generally, the longer the instrument, the lower the pitch or key of the instrument. Keys from D to F♯ are the preferred pitch of traditional Aboriginal players.

There are no reliable sources stating the didgeridoo's exact age, though it is commonly claimed to be the world's oldest wind instrument. Archaeological studies of rock art in Northern Australia suggests that the Aboriginal people of the Kakadu region of the Northern Territory have been using the didgeridoo for about 1500 years, based on the dating of paintings on cave walls and shelters from this period. A clear rock painting in Ginga Wardelirrhmeng from the freshwater period (1500 years ago until the present) shows a didjeridu player and two songmen (source: Journey in Time, George Chaloupka, p. 189).

The name

"Didgeridoo" is usually considered to be an onomatopoetic word of Western invention, but it has been said that it may be derived from the Irish words dúdaire or dúidire, meaning variously 'trumpeter; constant smoker, puffer; long-necked person, eavesdropper; hummer, crooner' and dubh, meaning "black" (or duth, meaning "native"). [1] It is alleged that upon seeing the instrument played for the first time, a British army Officer turned to his Gaelic aide and asked "What's that?", to which the aide bemusedly replied, "dúdaire dubh," meaning 'black piper.' However, this is unlikely as the Irish word for a black person is actually fear gorm (literally "blue man").

The earliest occurrences of the word in print include the Australian National Dictionary 1919, The Bulletin in 1924 and the writings of Herbert Basedow in 1926. There are numerous names for this instrument among the Aboriginal people of northern Australia, with yirdaki one of the better known words in modern Western society. Yirdaki, also sometimes spelt yidaki, refers to the specific type of instrument made and used by the Yolngu people of north-east Arnhem Land. In Western Arnhem Land, mago is used, although it refers specifically to the local version. Many believe that it is a matter of etiquette to reserve tribal names for tribal instruments, though retailers and businesses have been quick to exploit these special names for generic tourist-oriented instruments.

Construction and play

Authentic Aboriginal didgeridoos are produced in traditionally-oriented communities in Northern Australia and are usually made from hardwoods, especially the various eucalyptus species that are endemic to the region. (Here are the most often used eucalyptus species by region and some ranking.) The main trunk of the tree is often harvested, though branches are sometimes used as well. Aboriginal craftsmen spend considerable time searching for a suitable tree to make into a didgeridoo. The difficult part is in finding a tree that has been suitably hollowed out by termites. If the hollow is too big or too small, it will make a poor quality instrument. Sometimes a native bamboo or pandanus are used as well.

When a suitable tree is found and cut down, a length of the main trunk or a segment of a branch is removed that will become the didgeridoo. The bark is taken off, the ends trimmed, and some shaping of the exterior then results in a finished instrument. This instrument may be painted or left undecorated. A rim of beeswax may be applied to the mouthpiece end.

Cylindrical plastic pipes are sometimes used to make didgeridoos. They are cheap to buy from a hardware store, are light-weight, and can be easily tuned to any desired key, but they are rated as relatively poor instruments by experienced players.

Didgeridoos are also made from PVC piping. These generally have an 1.5" to 2" inside diameter, 100cm length. The mouthpiece is often made of the traditional beeswax, or duct tape.

The didgeridoo is played with continuously vibrating lips to produce the drone while using a special breathing technique called circular breathing. This requires breathing in through the nose whilst simultaneously expelling air out of the mouth using the tongue and cheeks. By use of this technique, a skilled player can replenish the air in his lungs, and with practice can sustain a note for as long as desired. Recordings exist of modern didgeridoo players playing continuously for more than forty minutes (Mark Atkins on Didgeridoo Concerto plays for over 50 minutes continuously), and some currently unsubstantiated claims peg times over one hour.

Physics and operation

A termite-bored didgeridoo has an irregular shape that, overall, usually increases in diameter towards the lower end. This shape means that its resonances occur at frequencies that are not harmonically spaced in frequency. This contrasts with the harmonic spacing of the resonances in a cylindrical plastic pipe, whose resonant frequencies fall in the ratio 1:3:5 etc. The second resonance of a didgeridoo (the note sounded by overblowing) is usually around an 11th higher than the fundamental frequency (a frequency ratio somewhat less than 3:1).

The vibration produced by the player's lips has harmonics - i.e. it has frequency components falling exactly in the ratio 1:2:3 etc. However, the non-harmonic spacing of the instrument's resonances means that the harmonics of the fundamental note are not systematically assisted by instrument resonances, as is usually the case for Western wind instruments (e.g. in a clarinet, the 1st 3rd and 5th harmonics of the reed are assisted by resonances of the bore, at least for notes in the low range).

Sufficiently strong resonances of the vocal tract can strongly influence the timbre of the instrument. At some frequencies, whose values depend on the position of the player's tongue, resonances of the vocal tract inhibit the oscillatory flow of air into the instrument. Bands of frequencies that are not thus inhibited produce formants in the output sound. These formants, and especially their variation during the inhalation and exhalation phases of circular breathing, give the instrument its readily recognisable sound.

Other variations in the didgeridoo's sound can be made with "screeches". Most of the "screeches" are related to sounds emitted by Australian animals, such as the dingo or the tucan. To produce these "screeches", the player simply has to cry out (in the didgeridoo of course) whilst continuing to blow air through it. The results range from very high-pitched sounds to much lower guttural vibrations.

Cultural significance

The didgeridoo is sometimes played as a solo instrument for recreational purposes, though more usually it accompanies dancing and singing in ceremonial rituals. For Aboriginal groups of northern Australia, the didgeridoo is an integral part of ceremonial life, as it accompanies singers and dancers in religious rituals. Pair sticks, sometimes called clapsticks or bilma, establish the beat for the songs during ceremonies. The rhythm of the didgeridoo and the beat of the clapsticks are precise, and these patterns have been handed down for generations upon generations. Only men play the didgeridoo and sing during ceremonial occasions, whilst both men and women may dance. The taboo against women playing the instrument is not absolute; female Aboriginal didgeridoo players did exist, although their playing generally took place in an informal contextand was not specifically encouraged. Linda Barwick, an ethnomusicologist says that traditionally women have not played the didgeridoo in ceremony, but in informal situations is no prohibition in the Dreaming Law. [2] Some sources state that the didgeridoo had other uses in ancient times. The instrument made a decent weapon because of its length and light weight and it was used for war calls to intimidate the opposing side (much like the bagpipes of Scotland). It is also suggested that the instrument was used as a large pipe, where local, hallucinogenic cacti were crushed and placed in the larger opening and smoked through the smaller end by the local elders after ceremonies. The didgeridoo was also used as a means of communication across far distances. Some of the soundwaves from the instrument's infrabasses can be perceived through the ground or simply echo. Each player usually has his own base rhythm which enables others to identify the source of the message. These secondary uses of the instrument have ceased in modern times as there is no more warring between tribes, and the illegalization of drugs in Australia.[3]

There are sacred and even secret versions of the didgeridoo in Aboriginal communities in parts of Arnhem Land, Northern Territory, and the surrounding areas. These sorts of instruments have specific names and functions and some of these are played like typical didgeridoos whereas others are not.

The modern didgeridoo industry

Most didgeridoos are mass produced in factories or mass harvested in Australian forests, often by non-Aboriginal entrepreneurs but also sometimes by Aboriginal people. There are also didgeridoos that are made from plastic, leather, glass, agave, yucca, bamboo and other materials.

A mass produced didgeridoo of Australian origin is easily detected. These are usually harvested in Far North Queensland and retailed in gift shops in popular tourist areas such as Cairns, Sydney, Melbourne, Alice Springs, and Darwin. The mouthpiece end of these didgeridoos is often large and requires the application of a rim of beeswax in order to reduce the size of the opening and to ensure a leak-free seal between the mouthpiece and the player's lips. The wax from the European honey bee is often used for this purpose. This wax is yellow in colour, in contrast to the native Australian sugarbag beeswax which ranges in colour from dark brown to black.

Modern innovations

In the 20th century, several "modernized" versions of the didgeridoo have been developed. The didjeribone [4] (also called "slideridoo" or "slidgeridoo"), a sliding didgeridoo made of plastic, was invented in the second half of the 20th century by Australian didgeridoo player Charlie McMahon. It is constructed of two lengths of plastic tube, one of which is slightly narrower in diameter than the other, and which slides inside the wider tube in the manner of a slide trombone (hence the instrument's name). This allows players to achieve fundamental tones within the compass of a major sixth, ranging from low B♭ to high G.

A keyed didgeridoo (having keys somewhat like those of a saxophone, allowing the performer to play melodically) was developed in the late 20th century by the U.S. didgeridoo player Graham Wiggins (stage name Dr. Didg) and used on his CDs Out of the Woods (1995) (in the track "Sun Tan") and Dust Devils (2002) (in the tracks "T'Boli" and "Sub-Aqua"). Wiggins built the unique and somewhat unwieldy instrument at the physics workshop of Oxford University, from which he earlier obtained his Ph.D.

In 1996 the Aboriginalart and Culture Centre Alice Springs created the worlds first online interactive Didgeridoo "university" and was featured by Bill Gates when he launched Windows 98 [5]

Health benefits

A 2005 study, published in the British Medical Journal, found that learning and practicing the didgeridoo helped reduce snoring and sleep apnea, as well as daytime sleepiness [6]. This appears to work by strengthening muscles in the upper airway, thus reducing their tendency to collapse during sleep.

Notable didgeridoo players

Main article: List of notable didgeridoo players

References and selected bibliography

• Ah Chee Ngala,P. Cowell C. (1996):How to Play the Didjeridoo - and history ISBN-0646328409
• Chaloupka, G. (1993): Journey in Time. Reed, Sydney.
• Cope, Jonathan (2000):How to Play the Didjeridoo - a practical guide for everyone. ISBN 0-9539811-0-X.
• Jones, T. A. (1967): "The didjeridu. Some comparisons of its typology and musical functions with similar instruments throughout the world". Studies in Music #1, pp. 23-55.
• Kennedy, K. (1933): Instruments of music used by the Australian Aborigines. Mankind (August edition), pp. 147-157.
• Lindner, D. (ed) (2005): The Didgeridoo Phenomenon. From Ancient Times to the Modern Age. Traumzeit-Verlag, Germany.
• Moyle, A. M. (1981): "The Australian didjeridu: A late musical intrusion". in World Archaeology, 12(3), 321-31.
• Neuenfeldt, K. (ed) (1997): The didjeridu: From Arnhem Land to Internet. Sydney: J. Libbey/Perfect Beat Publications.

See also

• List of Australian Aboriginal musicians
• Music of Australia
• Circular breathing
• Multiphonic

External links

• iDIDJ Australia: Australian Didgeridoo Cultural Hub
• Dreamtime, the site of the World Famous Didjeridu Mailing List
• The physics of the didj
• It's as Irish as - er - didgeridoo
• DidgeWorld Networking the worldwide didgeridoo community
• Didge Circular Breathing
• Extensive articles Tutorials and Interviews
• Didgeridoo Acoustics from Music Acoustics at UNSW
• Playing the Didgeridoo - A Foundation embouchure, diaphragm support, overtones, oral stops with MP3's
• Manikay.Com Database of audio recordings of traditional Arnhem Land music, samples included, many with didgeridoo
• http://www.gwiztraining.com/Didj%20Book.pdf Didjeridu: A Guide. General info on the didgeridoo, with citations and references