Summonus formed in mid 2007 in Sydney, Australia, through like-minded musicians wanting to create punishing and brutal sounds involving huge groove based guitar riffs, hauling powerful drums and acidic, gravel-fuelled vocals.

Each band member has clocked up experience playing in numerous other bands in Sydney, Melbourne and Scotland over the years, spanning a variety of styles including Grindcore, Hardcore, Death Metal, Punk, Stoner and Rock. Listening to bands such as Black Sabbath, Celtic Frost, Electric Wizard, High on Fire, Pod People and Bongzilla gets the band inspired to play and write bone crushing slabs of low end riffage.

After almost 2 years worth of gigging Summonus have been well received and have had the privilege of playing with many fine bands including Mastodon (USA), Blood Duster, Pod People, Black Cobra (USA), Monarch (France), Realized (Japan), Birushanah (Japan), Winnebago Deal (UK), Fuck I'm Dead, Looking Glass, Fattura Della Morte, The Day Everything Became Nothing, Captain Cleanoff, The Kill, Whitehorse, Roadside Burial, Deathcage, Agonhymn, Mother Mars, Crux, Taipan, Ebolie and Clagg.

Summonus have to date released one debut (self titled) CD, featuring 5 tracks clocking in at 32 minutes. The CD was recorded at Zen Studios in Sydney by Geoff Lee and mixed and mastered by Jason PC (Blood Duster), in the depths of his seedy home studio, Goatsounds, in Melbourne.

The disc is available as a limited edition, hand numbered (666 copies) digipack, featuring killer artwork by Glenn "Glenno" Smith. Summonus have an exclusive demo track, “The Gallows”, featured on a compilation CD included with the new issue (9) of Unbelievably Bad zine.

The band are currently working on a new recording, for release later in 2010, having very recently laid down the bones of 5 new songs.