Conspirator announced today via their Twitter (posted above) that tomorrow’s show at Atlanta, GA’s Terminal West will include members of Big Gigantic, The Disco Biscuits and Underground Orchestra, forming the Gigantic Underground Conspiracy.

The group, which includes Marc Brownstein and Aron Magner (Disco Biscuits, Conspirator), Dominic Lalli and Jeremy Salken (Big Gigantic), Chris Michetti (Conspirator/, RAQ) and Ben Baruch (Underground Orchestra) will play a rare show for Halloween. The group has performed a few times recently, including a show in July at The Fox Theatre in Colorado. Gigantic Underground Conspiracy made the rounds at festivals in 2012, appearing at Summercamp and Gathering of the Vibes along with a New Year’s Day gig in Chicago.