June 1825, his own Requiem in C minor – composed in 1804 – was performed for the first time. His remains were later transferred to the Zentralfriedhof. His monument is adorned by a poem written by Joseph Weigl, one of his pupils: Ruh sanft! Vom Staub entblößt, Wird Dir die Ewigkeit erblühen. Ruh sanft! In ew'gen Harmonien Ist nun Dein Geist gelöst. Er sprach sich aus in zaubervollen Tönen, Jetzt schwebt er hin zum unvergänglich Schönen. Rest in peace! Uncovered by dust Eternity shall bloom for you. Rest in peace! In eternal harmonies Your spirit now is set free. He expressed himself in enchanting notes, Now he is floating to everlasting beauty. Works Opera During his time in Vienna, Salieri acquired great prestige as a composer and conductor, particularly of opera, but also of chamber and sacred music. Among the most successful of his 37 operas staged during his lifetime were Armida (1771), La fiera di Venezia (1772), La scuola de' gelosi (1778), Der Rauchfangkehrer (1781), Les Danaïdes (1784), which was first presented as a work of Gluck's, La grotta di Trofonio (1785), Tarare (1787) (Tarare was reworked and revised several times as was Les Danaïdes ), Axur, re d'Ormus (1788), La cifra (1789), Palmira, regina di Persia (1795), Il mondo alla rovescia (1795), Falstaff (1799), and Cesare in Farmacusa (1800). Sacred works Salieri's earliest surviving work is a Mass in C major. He would write four major orchestral masses, a requiem, and many offertories, graduals, vesper settings, and sacred cantatas and oratorios. Much of his sacred music dates from after his appointment as Hofkapellmeister in 1788. Instrumental works His small instrumental output includes two piano concerti, a concerto for organ written in 1773, a concerto for flute, oboe and orchestra (1774), a triple concerto for oboe, violin and cello, and a set of twenty-six variations on "La folia di Spagna" (1815). Relationship with Mozart In the 1780s, while Mozart lived and worked in Vienna, he and his father Leopold wrote in their letters that several "cabals" of Italians led by Salieri were actively putting obstacles in the way of Mozart's obtaining certain posts or staging his operas. For example, Mozart wrote in December 1781 to his father that "the only one who counts in [the Emperor's] eyes is Salieri". Their letters suggest that both Mozart and his father, being Austrians who resented the special place that Italian composers had