It is widely reported in Australia and elsewhere that songs are considered by culture bearers to be the “crown jewels” of endangered cultural heritages whose knowledge systems have hitherto been maintained without the aid of writing. It is precisely these specialised repertoires of our intangible cultural heritage that are most endangered, even in a comparatively healthy language. Only the older members of the community tend to have full command of the poetics of song, even in cases where the language continues to be spoken by younger people. Taking a number of case studies from Australian repertories of public song (wangga, yawulyu, lirrga, and junba), we explore some of the characteristics of song language and the need to extend language documentation to include musical and other dimensions of song performances. Productive engagements between researchers, performers and communities in documenting songs can lead to revitalisation of interest and their renewed circulation in contemporary media and contexts. Australian Research Council