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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.

It’s Top 21 week and the incredible performances just keep coming. In front of a live audience, the pressure is truly on. Who will transform into a superstar, and who will let the nerves get to them?