"It's a time for everyone to come together and use music to help this city through what was such an awful, awful event," she said.
Kane said people were rugged up well to keep out the cold, but that wasn't stopping some from queuing up for a cold beer, meanwhile, others were chowing down on hot chips and popcorn.
Social media posts show the crowd packing into the stands and onto the field of the rugby stadium.
A stage lined with speakers and big screens on either side has been erected at one end of the field as the crowd patiently awaits the first act.
Comedian, mental health advocate and Kiwibank New Zealander of the year Mike King is hosting the event, as he did in Auckland.
• The artists include Lorde, Six60, Shapeshifter, Boh and Bic Runga, Anika Moa, Don McGlashan, Mitch James, Teeks, Stan Walker, Hollie Smith, Sol3 Mio, Melowdownz, Shihad, Dave Dobbyn, The Exponents, Marlon Williams and others.
• Christchurch Stadium gates will open at 5pm. The Christchurch City Council is urging people to get to the stadium early.
• Uber and Lime will be donating profits from general travel to and from the concert. You can park Lime scooters near the Jack Hinton Dr roundabout.
• Red Bus is offering a park and ride service to and from the stadium. Buses will depart from the bus exchange and several of the city's shopping malls from mid-afternoon.