Waireka and Rowe Te Meihana are set to win back everything they lost.
The musical duo are playing a fundraising gig to replace equipment stolen from their home.
In October 2013, while their sister, Harmony Te Meihana, was battling cancer, the brothers were "devastated" to discover their vast collection of musical equipment had been burgled in the night.
They had been using music as "counselling" for Harmony, but their electric guitars, amps, speakers, microphones and a loop station all disappeared from the sleepout at the back of the house while they slept.
"We used that music to get through a lot - it was a really big set-back," Waireka remembers.