In his own catalogue of works, Mozart listed the E flat Trio K 298 as 'Ein Terzett für Klavier, Clarinett und Viola', dating it 'Wien, 5. August 1786'. This most popular work is thought to owe its name of 'Kegelstatt-Trio' to Mozart's fondness for skittles. It may be that the contemporaneous 12 Wind Duets K 487, on whose autograph Mozart noted 'Vienna on the 27th of July during skittles', suggested this. It is also possible that some of the work on the Trio coincided with his frequent get-togethers with friends. According to Caroline Pichler, Mozart wrote it for Franziska von Jacquin, sister of Gottfried von Jacquin and one of his gifted piano pupils. The Trio was certainly performed in the Jacquin home, with Mozart on viola and Anton Stadler on clarinet. This incomparably melodious piece, full of poetic charm and perfectly balanced in instrumentation, would later serve as a model of the genre for Robert Schumann, Carl Reinecke and Max Bruch. The 12-stave autograph of the score in oblong format is kept today in the Bibliothèque nationale in Paris. Dynamic signs are very sparse and inconsistent in the autograph. It therefore made sense to consult the first print of the Trio's parts, published in 1788 by Vienna publisher Artaria & Co. (and announced in the Wiener Zeitung of 27th September 1788). The edition's title page reads: 'Trio per il Clavicembalo o Forte Piano con l'accompagnamento d'un Violino e Viola ... La parte del Violino si puo eseguire anche con un Clarinetto'. It is doubtful whether this print was authorized by Mozart, inasmuch as it mentions the clarinet only as an alternative to the violin (probably for marketing reasons). The most conspicuous divergence between autograph and first print occurs in bars 97, 148 and 152 of the Menuet's Trio, where Mozart explicitly writes f (not f sharp).