THE young and talented Mowbski Quartet is the latest string quartet featuring recent graduates from the Royal Northern College of Music to grace the stage of Beetham's Heron Theatre. Winners of the Hirsch Prize for chamber music, violinists Emily Mowbray and William Chadwick, viola player Juliette Kowalski and cellist Miriam Brown, perform works by Joseph Haydn, Gyorgy Ligeti and Franz Schubert on Sunday, October 1 (2.30pm). Box office open Fridays 10am-noon or telephone 015395-64283.