The Fragile, the second album by the folk music duo O'Hooley & Tidow, was released on 9 February 2012 on the No Masters label. It received a four-starred review in The Guardian. The album's title is derived from the words of one of its songs, "Mein Deern", about the dying hours of Heidi Tidow's German grandmother. "Gentleman Jack", a song from the album, subsequently featured as the closing theme for the BBC/HBO television series Gentleman Jack. The album features guest performances by Andy Cutting, Jackie Oates, Jude Abbott, Cormac Byrne, Anna Esslemont, Sam Pegg, The Solo Players and London's Diversity Choir.