Why Ryan Reynolds Is A Fan Of This Kiwi Singing Duo

A Kiwi brother and sister duo has wowed the judges on the Aussie X-Factor, playing an acoustic version of Major Lazer's hit Powerful.

Isla and Finley Brentwood - better known as Brentwood Duo - are originally from Queenstown but now live in Melbourne.

They made headlines recently when they were featured on the soundtrack for the film Deadpool after actor Ryan Reynolds posted their cover of the Deadpool Rap on his personal Facebook page.

*Warning: Contains explicit language

X-Factor judge Guy Sebastian was floored, describing their voices as "insane", while fellow judges Iggy Azalea and Adam Lambert both looked notably impressed.

- NZ Herald