Sara Krin returns to City Hall to open a new era of City Hell, its hard club night. She studied piano from the age of nine, had her first decks at seventeen, taught herself to mix and then to produce; her sound now moves between hard techno, schranz and hardcore, with tracks in the Beatport charts. Kynexis and Karras complete the bill. Thursday 29 October, 23:59 to 05:00.