It was sink or swim." Rocker Jimmy Cupples battled through sickness to deliver a toned down but still powerful rendition of Sweet Child of Mine.Young singer Ben Hazlewood proudly displayed his new tattoo, which he got with Team Madden earlier in the week, as he performed Ed Sheeran's Lego House.

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She has sold over eight million albums globally and overall has won three World Music Awards, 9 ARIA Music Awards, an MTV Video Music Award and several other awards.

She has served as a coach on The Voice Australia every year since 2012 (except from in 2014), taking home the win in season five in 2016 and again in season six in 2017.

"Tonight Australia witnessed you becoming the star that I knew you were," Madden said.

"If you didn't kill this one then you would have totally screwed this up.

The mum channeled Beyonce as she gave a sultry performance of Nicki Minaj's Turn Me On.

Speaking of Beyonce, Sarah De Bono proved to be as hot as her hair colour with her performance of Listen.

Seal then chose to keep young singers Fatai Veamatahau and Chris Sebastian on his team.

Goodrem chose experienced singers Glenn Cunningham and Danni da Ros for her final four.

It was important for Hazlewood to show that his emotional battle round performance was not just a fluke.