I didn't see this in a super search, so I don't think we've had anything about it before. While looking up info on another topic, I found the Following:

New Zealand Folk Song site. Looks pretty neat.
Here's some more info:

Old work ballads, Maori waiata and recent songs about the Kiwi way of life. Lyrics, chords, tunes and background information about song content, songwriters and recordings.
kat