Royal Opera House, LondonSarah Lamb and Steven McRae soar through Haydn's symphony, Natalia Osipova is driven mad in Texas and a 20-strong cast prowl the stage in this mixed billIn 1973, when Twyla Tharp choreographed her first formal ballet, As Time Goes By, she was known as a maker of modern dance. The material she created " to the 3rd and 4th movements of Haydn's Farewell symphony " was not only written in a radic…