Perhaps underlining a democratic impulse, in Figaro Mozart has written an opera full of ensembles – duets, trios and bigger groups. Felicity Tomkins as the Countess Almaviva, however, holds the stage alone at the beginning of Act 2, singing of her distress about her husband’s philandering in the lovely cavatina Porgi d’amor. Tomkins has a big and beautiful voice and her aria is finely judged, moving but artistically restrained.