Dies Bildnis ist bezaubernd schön Williams suggest that the opening notes of "Dies Bildnis" spill over into other numbers of "The Magic Flute": "The opening phrase of 'Dies Bildnis ist bezaubernd schön' turns up at a half-dozen unexpected places in the second finale. These and similar melodic remembrances are not to be regarded as leitmotifs in the Wagnerian sense but as partly unconscious echoes of musical ideas that were in Mozart's mind throughout the composition of the opera." One such echo has been repeatedly noted: the phrase to which Pamina sings the words "" ("My Tamino! Oh what happiness!") when she and Tamino are reunited
Piano concertos by Wolfgang Amadeus Mozart it was probably J.C. Bach, whom Mozart admired, who introduced the structural innovation of allowing the keyboard to introduce new thematic material in its first entry. Concertos Nos 1–4 (K. 37, 39, 40 and 41) are orchestral and keyboard arrangements of sonata movements by other composers. The next three concertos (K. 107/1, 2 and 3), which are not numbered, are arrangements of piano sonatas by J.C. Bach (Op 5. Nos. 2, 3, and 4, all composed by 1766). Based on handwriting analysis of the autographs they are believed to date from 1771–72. Concerto No. 5, K. 175 from 1773 was