Alcina, one of Handel’s most popular operas, is named after a dangerously seductive sorceress – soprano Patricia Petibon in this production from the 2015 Aix-en-Provence Festival; but perhaps the central figure is the bewitched warrior Ruggiero, performed here by Philippe Jaroussky. The role, which includes the haunting, lilting aria ‘Verdi prati’, was composed for the celebrated countertenor Giovanni Carestini, who provided the focus for Jaroussky’s superb 2007 album of arias by Handel, Hasse, Porpora, Leo and Gluck. Ruggiero, captive on Alcina’s magic island, will be transformed into an animal or inanimate object once the enchantress tires of him, but fortunately his betrothed Bradamante (a mezzo-soprano) comes to save him, disguised as her brother, Ricciardo. Further complications ensue when Alcina’s sister, Morgana, falls in love with ‘Ricciardo’.