A Kiwi singing trio has made a big impression over in Australia, taking over

The Voice

with their smooth sound.

Nuz Ngatai, Kevin Keepa and Danny Faifai call themselves The Koi Boys.

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They're Kiwis, but they're based on the Gold Coast and have been singing together for nearly a decade, describing their act as a mix of comedy, harmonies, choreography and impersonations.

They were the first trio to ever appear on

The Voice AU

, singing their rendition of 1954 hit

Sh-Boom

by The Chords.

Their performance convinced all five star judges - Ronan Keating, Jessie J, Delta Goodrem and Joel and Benji Madden - to turn their chairs in recogition.

Jessie J called it "the best vocal audition we've had tonight", and Joel Madden has already pegged them as potential winners of the show.

The Koi Boys have joined Jessie J's team, and she will act as a coach and mentor in the coming rounds of The Voice.

You can watch their full audition here.