Indigenous music of Australia comprises the music of the Aboriginal and Torres Strait Islander peoples of Australia, intersecting with their cultural and ceremonial observances, through the millennia of their individual and collective histories to the present day. The traditional forms include many aspects of performance and musical instrumentation that are unique to particular regions or Aboriginal Australian groups; and some elements of musical tradition are common or widespread through much of the Australian continent, and even beyond. The music of the Torres Strait Islanders is related to that of adjacent parts of New Guinea. Music is a vital part of Indigenous Australians' cultural maintenance.