David Owen Norris and his son Barney reflect on the slipperiness of history in a show that elegantly defies categorisation. that gently but deeply explores the percentage contributions of genes, parenting, luck and maybe fate to who we are. It's partly a top-class concert, in which pianist David Owen Norris exquisitely samples Clementi, Grainger, Elgar and others. These recitals interleave and sometimes underscore monologues by the musician and his son Barney that are autobiographical and also geographical. The Wellspring is subtitled "a memory cycle" and the 70 elegant minutes . are structured around set-piece anecdotes. there is a universality in the Norrises' reflections on the slipperiness of history (their memories of shared events can differ) and the sheer range of talents on display.