Now I realise the definition of 'Australian' (or any other nationality for that matter) can be a bit hazy since Benjamin, Grainger, Williamson etc although born in Australia lived and worked overseas for most of their lives, but this thread can be used for relevant works from all composers born in or else having spent significant time in Australia - yes, even William Vincent Wallace.
I'm reposting two pieces by Arthur Benjamin I play quite frequently. The Forest Peace piece is very peaceful, seriously

Regards
Fred