"We're all whanau. We've been together a long time."
The other members are Rachel Hall (vocals), Manawa-kaha Webb (drums) and Ryan Evans (bass). Rachel also won for best female musicianship.
The hotly contested solo/duo section was won by Elsa Meier of Opua. The Springbank School pupil only took up music two years ago; when her bandmates moved away she carried on solo.
One of the more powerful performances was by Te Rina Kahle from Whangaroa College, who sang about a family member's experience of domestic violence. She won the prize for best song.
Kerikeri band Purple Minded was voted people's choice. Their guitarist, Simon Halliday, won the Mainz musicianship award.
The two top acts in the band and solo/duo categories now have to submit a video of 15 minutes of original music to have a chance of being selected for the national finals.
Results: Best band: 1. Back 2 Back, Kerikeri High; 2. Cypress, Kerikeri High/Bay of Islands College; 3. Volume 1, Whangaroa College. Best solo/duo: 1. Elsa Meier, Springbank School; 2. Guy Yarrall, Kerikeri High. Best musicianship: Simon Halliday, Kerikeri High. Women's musicianship: Rachel Hall, Kerikeri High. Best song: Te Rina Kahle, Whangaroa College. Best lyrics: Danielle Hookway, Kerikeri High. People's choice: Purple Minded, Kerikeri High.