The London Welsh Chorale presents the world premiere of Welsh composer Joseph Parry's 'Te Deum Laudamus', reconstructed by the choir's musical director Edward Rhys-Harry. Plus, William Matthias' dramatic cantata 'St Teilo', Op 21 (narrated by Lord Thomas of Gresford), in celebration of their thirtieth anniversary, with the British Sinfonietta and the New London Children's Choir.