All the stars have aligned for the first concert at Christchurch's new stadium.

Six60 and Synthony will open the music calendar at One NZ Stadium at Te Kaha next May - following Super Rugby’s Super Round a month earlier.

It’s backed by the Government’s 70-million-dollar Major Events fund.

Duco Events Promoter David Higgins told Ryan Bridge Synthony wouldn’t be part of the lineup without that funding.

He says these events are very expensive to run, and organisers have to make a risk-return judgement if it's their own neck on the line.