Sinful treat

Shiny swags of gold cloth hang in front of the curtain before David McVicar’s production of Der Rosenkavalier, and that’s good. You want a touch of luxury in a Rosenkavalier. This is 20th-century opera’s great sinful, indulgent treat. Think of it and you think of Karajan and Schwarzkopf: huge creamy voices, silken Viennese strings, and New York Met production budgets.

In truth, when Der Rosenkavalier gets under your skin, none of that matters. It’s not the glittering set pieces that turn out to be the real heart of the thing; not even the final Trio or the justly famous sequences in which the Marschallin ponders the transience of youth. They’re all essential, of course — the drama’s whole driving force is the tension between outward show and private reality. But what sticks with you are sudden, evanescent moments: a key change, a woodwind chord, the way two characters brush hands or meet each other’s eye.