Debussy’s Sonata and Ravel’sIntroduction and Allegro flanka vivid suite from Stravinsky’sPetrushka. Chabrier pianoduos and a brilliant woodwindshowpiece by Saint-Saënsprovide a suitable prelude to thelatter’s much-loved Carnival of theAnimals, introduced by actressPatricia Routledge speaking theverses of Ogden Nash.