Does anyone know this song's title?

By now, you probably heard about the movie “Whalerider”. Here’s the $64K question: In the movie, there’s a school dance (students performing) scence where the teacher turns on a CD for music, a male (maybe?) singer’s voice comes on. Does anyone know what’s the song’s title and who’s the singer? I was too busy secretly wiping tears from my eyes (hey I’m the sentimental type!) to notice the end credits. I did many searches but only found Lisa what-her-name for the soundtrack, and nothing else. Help, anyone?

Here are the song credits at the end of the movie (from whaleriderthemovie.com):
“Bar One”
(International Observer)
Loaded Sounds
Performed vy International Observer
Coutesy of IO Audio

“Kaikoura Dub”
(M. Hodgson / P. Free)
Performed by Pitch Black
Coutesy of Pitch Black

“U Want Beef”
(I. Chongnee / M. Sagaponutele /
D. Sayello / D. Maoate / D. Puniani)
Dawnraid Music Publishing
Performed by Deceptikonz
Courtesy of Dawnraid Entertainment

“Voice / Percussion Loop”
Hirini Melbourne
and Richard Nunns
From Te Ku Te Whe
Courtesy of Rattle Records

“Jast Passing Through”
Composer & Singer
Nick Theobald