Today's programme comes live from the opening day of the City of London Festival. The venue is the sumptuous Livery Hall of the Worshipful Company of Drapers, where Sean Rafferty is joined by the BBC Concert Orchestra conducted by Christopher Warren-Green. Guests from the festival programme include pianist Melvyn Tan playing Mozart and oboist Nick Daniel. And for Architecture Week there is an opportunity to hear about some of the contemporary buildings in the vicinity.