The gunman, identified as 24 year-old Connor Betts, was a member of Menstrual Munchies, a three-man band that performed regularly on the Midwest death metal scene, recently appearing as one of the bands at the Summer Massacre 2 concert in Chicago on June 29.

Pornogrind is a subgenre of a fast and extreme kind of heavy metal called grindcore, which is known for its mostly dark satirical themes of sexual violence and gore that is delivered for shock value.

The band’s song titles are explicitly Sexually violent, such as “Preteen Daughter Pu$$y Slaughter” and “Cunt Stuffed With Medical Waste – Sexual Abuse Of A Teenage Corpse.” The album art is equally explicit. One album cover shows a woman consuming feces, while another shows an illustration of a headless body of a young woman chained to a bed, covered in blood, as a man puts his pants back on.