But the stay promoted Mozart to begin writing a mass in C Minor, of which only the first two sections, "Kyrie" and "Gloria," were completed.
The opera Die Entführung enjoyed immediate and continuing success and bolstered Mozart’s name and talent throughout Europe. With the substantial returns from concerts and publishing, he and Constanze enjoyed a lavish lifestyle. They lived in one of the more exclusive apartment buildings of Vienna, sent their son, Karl Thomas, to an expensive boarding school, kept servants, and maintained a busy social life. In 1783, Mozart and Constanze traveled to Salzburg to visit his father and sister. The visit was somewhat cool, as Leopold was still a reluctant father-in-law and Nannerl was a dutiful daughter. But the stay promoted Mozart to begin writing a mass in C Minor, of which only the first two sections, "Kyrie" and "Gloria," were completed. In 1784, Mozart became a Freemason, a fraternal order focused on charitable work, moral uprightness, and the development of fraternal friendship. Mozart was well regarded in the Freemason community, attending meetings and being involved in various functions. Freemasonry also became a strong influence in Mozart’s music.