Live performance in the Grand Final of Tonight Again by Guy Sebastian representing Australia at the 2015 Eurovision Song Contest.\rbr\rbrGuy Sebastian - Tonight Again (Australia) Final live Eurovision 2015 Австралия Финал Евровидение 2015.\rbr\rbrAustralia in the 2015 Eurovision Song Contest Artist: Guy Sebastian Song: Tonight Again.\rbr\rbr\rbr\rbrGuy Sebastian will represent Australia at the 2015 Eurovision Song Contest in Vienna with the song Tonight Again. This is his performance at the 2015 .