Symphony, K. 45a (Mozart) implies that K. 45a was composed by Wolfgang during their stay in The Hague, possibly for the inauguration of William V, Prince of Orange on 11 March 1766. The Mozarts then took the symphony along with them on their journeys; Wolfgang revised the symphony along the way by making a few changes, especially in the inner voices. Symphony, K. 45a (Mozart) The Symphony in G major "Old Lambach", K. Anh. 221/45a, was probably written by Wolfgang Amadeus Mozart during 1766 in The Hague and revised in 1767. Both versions – the original and the revision – have survived. The symphony
Wolfgang Amadeus Mozart of "Ascanio in Alba" (1771) and "Lucio Silla" (1772). Leopold hoped that these visits would result in a professional appointment for his son, and indeed ruling Archduke Ferdinand contemplated hiring Mozart but owing to his mother Empress Maria Theresa's reluctance to employ "useless people", the matter was dropped and Leopold's hopes were never realized. Toward the end of the journey, Mozart wrote the solo motet "Exsultate, jubilate", K. 165. After finally returning with his father from Italy on 13 March 1773, Mozart was employed as a court musician by the ruler of Salzburg, Prince-Archbishop Hieronymus Colloredo. The composer had a