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The judges deliver their verdict on what was the most explosive and emotional build to date.

A joyous performance from an all-abilities choir, an indigenous artist presents an original, modern day corroboree and a world champion rope skipper.

The best of the best return for the Semi-Finals! Judges Shane Jacobson, Lucy Durack, Nicole Scherzinger and Manu Feildel have selected 30 acts to come back and battle for a place in the Grand Final.