The Magic Flute the Night, evidently needed little such help: this role is famous for its difficulty. In ensembles, Mozart skillfully combined voices of different ability levels. The vocal ranges of two of the original singers for whom Mozart tailored his music have posed challenges for many singers who have since recreated their roles. Both arias of the Queen of the Night, "O zittre nicht, mein lieber Sohn" and "Der Hölle Rache kocht in meinem Herzen" require high F, rare in opera. At the low end, the part of Sarastro, premiered by Franz Xaver Gerl, includes a conspicuous F in a few locations.
The Enchanted Pig (opera) by the witch and Adelaide. Offering herself to Adelaide as a spy to keep watch on the pig, Flora is enabled to release him and to live with him in human form happily ever after. In a review of the original production, the critic Michael Billington wrote in "The Guardian": "This is a show that proves opera, at its best, is source of magic and enchantment." In "The Independent", Paul Taylor called it an " exhilarating opera for children (and discerning adults)." Reviewing a 2009 production at the Linbury Studio Theatre, Rupert Christiansen wrote for "The Daily Telegraph": "Dove is