A group of chamber musicians will bring the heat of South America to the classical. Latin flare with Haydn’s String Quartet in G Major, which will open the second half of the show. “In Haydn’s time. 1 of 8 Geoff Nuttall, first violinist of the St. Lawrence String Quartet, discusses Joseph Haydn’s "Emperor" Quartet with Da Camera’s audience in a September concert. The quartet’s slow movement. Two of classical music’s…