Luigi Cherubini is the pantomime villain of French romantic music. As head of the Paris Conservatoire in the 1820s he was the embodiment of obsolescence: Berlioz’s Memoirs recount an occasion when some state functionary told the ageing master that he should really write an opera. ‘One can dimly imagine the indignant consternation of the author of Medea, Les deux journées, Lodoïska, Mont Saint-Bernard…’ writes Berlioz with twinkling malice, though most modern operagoers, if they’re honest, won’t be any wiser.