On Saturday, BBC2 and Radio 3 broadcast a simultaneous live relay of Handel's rarely performed Semele from the London Coliseum. Robert
Hollingworth looks into the often bewildering worlds of Baroque opera on stage and in the recording studio, with the help of an expert in both fields - the conductor Rene Jacobs.
With excerpts from operas by Handel, Graun, Monteverdi and Cavalli. Producer Joanne Whitworth
Repeated tomorrow 4pm