The planet is in trouble. Dire trouble. But fear not: Melbourne seven-piece King Gizzard and The Lizard Wizard return to save us all, this time armed only with blast beats, an arsenal of well-oiled guitars that are locked and loaded, and a desire to melt faces clean off. Their fifteenth studio album, Infest The Rats Nest, released on Flightless Records, is by far The Gizz’s hardest and heaviest album to date. Released just six months after the uplifting blues-rock boogie and deep electro explorations of Fishing For Fishes and drawing on the mid / late 1980s golden period of thrash metal – Metallica and Slayer, certainly, but also lesser-cited bands such as Exodus, Kreator and Overkill – Infest The Rats Nest sees a wholly unexpected creative detour into new sonic terrain. King Gizzard and The Lizard Wizard aren’t mere dabbling dilletantes either. Their love of this ferocious music runs deep, and was previously explored on 2017’s apocalyptic concept album Murder Of The Universe, hinted at during 2016’s award-winning Nonagon Infinity’s more bludgeoning moments and elsewhere in numerous hardcore psychedelic freak-outs in their back catalogue. Infest The Rats’ Nest is the sound of King Gizzard and The Lizard Wizard scratching the thrash metal itch, fully and unequivocally. This is an album dripping with disdain and disgust for a planet consuming itself in a mass act of cannibalism which meets the fears and anxieties of a planet head on; here is a place where uncompromising music meets the concerns of contemporary cli-fi, that emerging movement of writing centred around ecological disaster and its repercussions.