Gieseke claimed to have written the entire libretto, based on Liebeskind's story "Lulu," but its completion prior to La Clemenza di Tito is more commonly attributed to Schikaneder, whose limited baritone range was suited for the role of Papageno.
Of the aria "O Isis und Osiris," which opens this opera's second act, George Bernard Shaw said that it was the only music that would not sound out of place in the mouth of God.  Gieseke claimed to have written the entire libretto, based on Liebeskind's story "Lulu," but its completion prior to La Clemenza di Tito is more commonly attributed to Schikaneder, whose limited baritone range was suited for the role of Papageno. FTP identify this opera in which the forces of good represented by Sarastro and Tamino defeat the Queen of the Night, by Wolfgang Amadeus Mozart.
Of the aria "O Isis und Osiris," which opens this opera's second act, George Bernard Shaw said that it was the only music that would not sound out of place in the mouth of God.  
Die {Zauberflote} or The {Magic Flute}