Trey Anastasio Band singer/trumpeter Jennifer Hartswick will perform with Karl Denson’s Tiny Universe on Halloween. As previously reported, Denson and his band will perform a mix of disco classics at Denver’s Ogden Theatre on October 31. According to a post on their Facebook page, the Tiny Universe has declared Hartswick their “disco queen” this Halloween. The evening will also feature The Funkytown Orchestra and special guest DJ Z-Trip.