The group established the Yothu Yindi Foundation in 1990 to promote Yolngu cultural development, including from 1999 producing the annual Garma Festival of Traditional Cultures and from May 2007 running the Dilthan Yolngunha (Healing Place). Yothu Yindi's most widely known song, ' Treaty', peaked at No. 11 on the ARIA singles charts in 1991 and the related album Tribal Voice peaked at No. 4 on the ARIA albums charts. More broadly, they promoted mutual respect and understanding in the coming together of different cultures. They adapted traditional Yolngu dance performances to accompany their music. Their sound varies from traditional Aboriginal songs to modern pop and rock songs, where they blended the typical instruments associated with pop/rock bands, such as guitars and drums, with the traditional yidaki and bilma. The band combines aspects of both musical cultures. Founding members included Stuart Kellaway on bass guitar, Cal Williams on lead guitar, Andrew Belletty ( drums), Witiyana Marika on manikay (traditional vocals), bilma (ironwood clapsticks) and dance, Milkayngu Mununggurr on yidaki ( didgeridoo), Geoffrey Gurrumul Yunupingu on keyboards, guitar and percussion, past lead singer Mandawuy Yunupingu and present Yirrnga Yunupingu on vocals and guitar. The Aboriginal members came from Yolngu homelands near Yirrkala on the Gove Peninsula in Northern Territory's Arnhem Land. Yothu Yindi ( Yolngu for 'child and mother', pronounced / j ɒ θ uː ˈ j ɪ n d i/) are an Australian musical group with Aboriginal and balanda (non-Aboriginal) members, formed in 1986 as a merger of two bands formed in 1985 – a white rock group called the Swamp Jockeys and an unnamed Aboriginal folk group.

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