Since we don't have a definite account of the von trapp family australia story, the potential key elements could start with their journey to Australia. It could be a long and arduous one, or perhaps a more straightforward move. Once in Australia, their interaction with the local people would be crucial. They might have shared their stories of the von Trapp family's past in Austria, which could have inspired Australians. Their contribution to the local cultural and musical landscape, such as performing in local events or teaching music, would also be significant elements.
As I mentioned before, not much is known about a specific 'von trapp family australia story'. But if it exists, key elements could include their reasons for going to Australia, like seeking new horizons or escaping some hardships. Also, how they maintained their family identity in a new and different country.