Building materials heavy metals

Australian heavy metal music has its roots in both the Australian hard rock and pub rock tradition of the 1970s and the American and British heavy metal scenes.
Since the mid-1980s, Australian heavy metal has been particularly influenced by foreign bands, particularly Swedish death metal, American thrash metal and black metal from Norway.
Within Australia heavy metal has always remained part of the underground but since the mid-1990s many Australian metal acts have found widespread acceptance in overseas markets, particularly in Europe.

Post-metal is a music genre rooted in heavy metal but exploring approaches beyond metal conventions.
It emerged in the 1990s with bands such as Neurosis and Godflesh, who transformed metal texture through experimental composition.
In a way similar to the predecessor genres post-rock and post-hardcore, post-metal offsets the darkness and intensity of extreme metal with an emphasis on atmosphere, emotion, and even revelation, developing an expansive but introspective sound variously imbued with elements of ambient, noise, psychedelic, progressive, and classical music.
Songs are typically long, with loose and layered structures that discard the verse–chorus form in favor of crescendos and repeating themes.
The sound centres on guitars and drums, while any vocals are usually screamed or growled and resemble an additional instrument.