From Maori origin stories to te reo thrash metal - a new exhibition is canvassing Maori performance over the centuries. Pukana: moments in Maori performance at the National Library in Wellington includes traditional forms like karanga, wero, haka, whaikorero, waiata and haka - but also some surprises and contemporary reinterpretations. There are many treasures from the Alexander Turnbull Library collection included in the exhibition, including an early carved wooden Maori puppet, and a poi owned by writer Katherine Mansfield. One of the three curators of Pukana, Paul Diamond showed Lynn Freeman around the exhibition... The exhibition's just opened at the National Library in Wellington.