One may indeed wonder why an essentially Italian work should end with verses in praise of Allah. The plain fact was that Busoni at the moment happened to be interested in "Aladdin" and had set the final chorus to music. When he planned the Concerto he saw that this chorus, which has something of the mystical character of the concluding stanzas of Goethe's "Faust", was exactly the music to give the general sense of serenity that he required for his own finale. It was from the original "Aladdin" chorus that he took the theme which occurs in the first movement; when he came to write out the last movement he felt that he missed the words, and therefore directed that a chorus of men's voices should sing them.