When they weren’t putting ancient kings on stage, Baroque opera composers nursed a fascination with witches, sirens and nymphs whose doings provided rich pickings for adventurous vocal and orchestral writing. Anna Prohaska’s Enchanted Forest gathers together a clutch of these characters for a program of otherworldly arias. More nymph than vengeful witch, Prohaska’s pure, slender soprano is at its best in the earlier selections: Restino imbalsamate, from Cavalli’s Calisto and Monteverdi’s Lamento della Ninfa are ethereal yet dark-edged, with gently rippling coloratura and effective use of straight tone which elsewhere can turn a little strident.

At top speed the voice loses some of its lustre, although there’s a vehement accuracy to these pieces – notably Vivaldi’s Alma oppressa and Handel’s Combattuta da più venti – which is not without excitement. Of the excerpts from Purcell’s The Fairy Queen, it’s the mesmerising O let me weep which is most successful, Prohaska overcoming a needlessly imperious start to deliver a lyrical, moving Plaint. Best of all, though, is Cavalli’s O piu d’ogni ricchezza, an understated tour de force whose recitatives are as vibrantly delivered as its dance rhythms and vocal effects.

Jonathan Cohen and Arcangelo are atmospheric partners, but make the strongest impression in the prismatic strains of Purcell, whose music really does evoke a sense of enchantment.

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