Symphony, K. 98 (Mozart) the following movements: In Vienna, an unknown person (possibly Franz Lorenz) compiled a ""Sistematisch-Thematisches Verzeichnis der sämtlichen Compositionen von Wolfgang Amadeus Mozart" ("Systematic Thematic Catalogue of all composition by Wolfgang Amadeus Mozart"). A pencil note "1771 Milan Nov" can be found for K. 98. Ludwig Ritter von Köchel, who only knew the work in an arrangement for two pianos, considered the work authentic and included it into the first edition of the Köchel catalogue. Wyzewa and Saint-Foix did not doubt the work's authenticity, but believed that Mozart only sketched the symphony and did not write it out completely. In his
Wolfgang Amadeus Mozart Paris on 14 March 1778 to continue his search. One of his letters from Paris hints at a possible post as an organist at Versailles, but Mozart was not interested in such an appointment. He fell into debt and took to pawning valuables. The nadir of the visit occurred when Mozart's mother was taken ill and died on 3 July 1778. There had been delays in calling a doctor—probably, according to Halliwell, because of a lack of funds. Mozart stayed with Melchior Grimm, who, as personal secretary of the Duke d'Orléans, lived in his mansion. While Mozart was in Paris,