 A corroboree, a generic word for a meeting of Australian Aboriginal peoples often including dance as well as elements of sacred ceremony and/or celebration, has been incorporated into the English language and used to explain a practice that is different from ceremony and more widely inclusive than theatre or opera.In the latter part of the 20th century the influence of Indigenous Australian dance traditions has been seen with the development of concert dance, particularly in contemporary dance with the National Aboriginal Islander Skills Development Association providing training to Indigenous Australians in dance, and the Bangarra Dance Theatre.The Australian Ballet is the foremost classical ballet company in Australia.