Ozmacca, I bet the singer you are referring to is John Williamson. He wrote the song and has recorded it on two or three of his albums. His most recent album, "Mates On The Road", along with many others, is available from his web site. Just do a search on John Williamson and click on the entry "Australian balladeer".
    John did two concerts in the USA back in February--one in Lugna Beach, California, and the other in Springfield, Missouri. Fantastic performer!!!!!! One person drove all the way from Georgia, another from South Carolina, and a third flew from Seattle, Washington. They came just to see and hear the concert!! Anyone who inspires dedication like that must be a bit above average, wouldn't you say?