The Magic Flute the sound of a solemn march. Sarastro tells the priests that Tamino is ready to undergo the ordeals that will lead to enlightenment. He invokes the gods Isis and Osiris, asking them to protect Tamino and Pamina (Aria and chorus: ""). "Scene 2: The courtyard of the Temple of Ordeal" Tamino and Papageno are led in by two priests for the first trial. The two priests advise Tamino and Papageno of the dangers ahead of them, warn them of women's wiles and swear them to silence (Duet: ""). The three ladies appear and try to frighten Tamino and Papageno into
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