How much weight of plot can dance carry? Balanchine famously insisted that there are no mothers-in-law in ballet, and masters such as Fokine, Massine and Ashton largely confined the dimensions of their narratives to the back of a postage stamp. Yet in A Month in the CountryAshton also proved that ballet can communicate delicate nuances of psychology; MacMillan’s Mayerling has a complex historical-political setting that fascinates; and Matthew Bourne has devised a cartoon-ish mode of silent tale-telling that has proved very popular and effective.