‘What gives your lies such power?’ asks the bewildered Sicilian leader in Szymanowski’s opera Krol Roger. The question is addressed to a charismatic shepherd, on trial for propagating a lascivious new religion of unbridled sensuality. Roger’s wife, Roxana, has already converted along with many of his subjects, while the city’s conservative and clerical factions clamour for the blasphemer’s death.