What is Didgeridoo?
{{Infobox instrument | name = Didgeridoo | names = | image = Australiandidgeridoos.jpg | image_capt = Australian didgeridoos | background = | classification = Woodwind | hornbostel_sachs = | hornbostel_sachs_desc = | inventors = | developed = | range = | related = | musicians = [[Xavier Rudd]], [[Charlie McMahon]] | builders = | articles = }}[[File:Didgeridoo Entier1.jpg|thumb|right|250px|A typical didgeridoo]] The '''didgeridoo''' (sometimes '''didjeridu''') is an [[Australian]] [[Aborigines|Aboriginal]] wind [[musical instrument]]. They were used by the [[Yolgnu]] people of [[Arnhem Land]]. They can be quite long, anywhere from {{convert|1|to|3|m|ft|0|abbr=on}} long. Most are around {{convert|1.2|m|ft|0|abbr=on}} long. The longer the instrument, the lower the pitch or key of the instrument. They are a hollow wooden tube, which can be either cylindrical or conical in shape. It is best described as being a wooden [[trumpet]] or drone. [[Musicologist]]s say it is a [[brass]] [[aerophone]].<ref>{{cite web|url=https://h2g2.com/edited_entry/A9567723|title=h2g2 - Brass Instruments - Tuning and Harmonics - Edited Entry|first=Not Panicking|last=Ltd|website=h2g2.com}}</ref> It is difficult to know when didgeridoos were first used. Studies of [[rock art]] in Arnhem Land show that it has been in use for more than 1,500 years. A rock painting in Ginga Wardelirrhmeng, on the northern edge of the Arnhem Land [[plateau]], dates from the freshwater period.<ref>{{cite web|url=http://www.environment.gov.au/parks/kakadu/culture-history/art/styles.html|title=Kakadu National Park - Rock art styles<!-- Bot generated title -->|publisher=|access-date=2010-09-11|archive-date=2012-04-21|archive-url=https://web.archive.org/web/20120421050045/http://www.environment.gov.au/parks/kakadu/culture-history/art/styles.html|url-status=dead}}</ref> It shows a didgeridoo pl