Australia participated in the Eurovision Song Contest 2021 with the song "Technicolour" written by Jessica Cerro and Dave Hammer. The song was performed by Montaigne, who was internally selected by the Australian broadcaster Special Broadcasting Service (SBS) to represent that nation at the 2021 contest in Rotterdam, Netherlands. Montaigne was announced as the Australian representative on 2 April 2020 after she was due to compete in the 2020 contest with "Don't Break Me" before the 2020 event's cancellation. The song Montaigne performed, "Technicolour", was presented to the public on 4 March 2021.