"Dr Ah Sam is passionate and won't settle for average," he said.
"He's giving our students opportunities that most would never dream possible, and ensuring that their confidence, identity and potential are realised 100 per cent."
All nine bands, from Kaitaia to Whangārei, performed well, presenting what one critic described as a mind-blowing display of musical skill.
Hosted by youth mentoring programme Be Free, the competition was open to all Northland youth bands, which were judged on musicianship, composition/interpretation and entertainment value, with extra points awarded for original songs.
A huge lift in the calibre of both song-writing and performance this year meant the judges - a musical theatre singer, a successful US musician and a Be Free graduate - had a hard time choosing a winner, but eventually settled on KALS Collective.