In the closing weeks of 1949, the consensus of New York’s cognoscenti was unanimous: the American debut of London’s Sadler’s Wells Ballet was the triumph of the post-war era. The praise and attention lavished upon the visiting artists was unrelenting; the Yanks’ sudden passion for tutus, Tchaikovsky, and entrechat quatres bordered on obsession. And yet, three weeks into their engagement, with four performances at The Met remaining, their company’s esteemed music director and conductor Constant Lambert was bored to tears.