To celebrate St Cecilia's Day, Sean Rafferty explores the remarkable life of the patron saint of music and the myths that surround her. And conductor David Shallon and violist Tabea Zimmermann discuss married life in the world of international music making. Music includes at 5.35 Bach's Toccata in C minor, BWV911, played by Martha Argerich (piano); at 6.30 Britten's Hymn to St Cecilia performed by King's College Chapel Choir conducted by Stephen Cleobury ; and after 7.00 another chance to hear Radio 3's Disc of the Week.