We're listening to Poi E in my te reo Māori class.
Dalvanius Prime did the tune, the lyrics were written by Ngoi Pewhairangi, and the song was performed by the The Pātea Māori Club.
When the song came out in 1984, record companies in Aotearoa had no interest in recording or promoting songs in te reo Māori. So Prime created his own record company to distribute the song himself. Although radio stations wouldn't touch it, its brief appearance in an Eyewitness News segment brought it the attention it needed. It quickly became popular within the Māori breakdancing scene which brought further attention to the song as it was performed on the street. Poi e eventually reached the number one spot in the national charts.
You can find the lyrics in both te reo Māori and English here.
If you're in Aotearoa, the song was used in Taika Waititi's Boy (2010) which is currently free on TVNZ :)