As part of the "Genius of Mozart" season, Stephen Johnson visits Clandon Park House in Surrey to study the nuances found in Mozart's most famous serenade - "Eine Kleine Nachtmusik". He's joined by the architect Jonathan Foyle to discuss the links between Mozart's musical structures and the Palladian-style architecture of the period, and by the historian Steven Parissien who'll be giving his insight into the social history of the time and into the European-wide concept of 18th century sensibility. Musical extracts will be played by The Doric Quartet and double-bass player Tim Gibbs.