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In February 1778, Leopold Mozart told his son to go to Paris with his mother, and the pair arrived in the capital city in March 1778. He immediately started to set up his musical networks and wrote to his father about his activities: he was writing music for choruses for a Miserere by Holzbauer and wrote a Sinfonia Concertante for an ensemble of flute, oboe, bassoon, and horn. However, no such work has even been found.

Croce: Mozart Family Portait (detail), 1781
The sinfonia concertante has a very limited life. It was a successor to the Baroque Concerto Grosso but written for a group of soloists and orchestra. Each soloist has its own prominent role, but at the same time, each soloist is part of the orchestral ensemble. It fell out of use as a genre in the Romantic era but was taken up again in the 20th century by composers such as George Enescu and William Walton.
What we know now as the Sinfonia Concertante in E flat major (K. 297b) is scored for oboe, clarinet, bassoon, and horn. Is this the same work Mozart was referring to in his letter to his father, or something that was just slipped into Mozart’s catalogue because it seemed to fit the bill?
The work came into the repertoire in 1869, and it took nearly a century for it to be questioned. The Sinfonia Concertante in E flat major was considered to be fully by Mozart until 1964, when the editors of the New Mozart Edition decided to banish it to the list of ‘dubious and spurious works’. This is not uncommon, particularly with famous composers such as Mozart – many later composers were more than happy to have their works circulating (and earning royalties) under another’s more famous name. The number of spurious works by Pergolesi is astonishing in its breadth, for example.
Without a manuscript in Mozart’s hand, the question of whose work this might be broadens considerably. Scholars in the 1960s wondered if, perhaps, the solo work was Mozart’s, and the orchestra accompaniment might be by another hand.
The only known source for the work was a copyist’s manuscript from the mid-19th century. When scholars started looking more closely at the piece, however, some problems quickly emerged. When the instrumental writing of the Sinfonia Concertante was compared to known Mozart works, the solo instruments had anomalous disparities from the norm in terms of range (tessitura). The orchestral accompaniment is more like writing from the early 19th century rather than the mid-18th century. The only known source (the copyist’s manuscript ) was prepared for the Mozart biographer Otto Jahn by one of his copyists and doesn’t have any composer’s name on it – the theory is that Jahn’s copyist had a set of the solo parts (flute, oboe, bassoon, and horn) and made his reconstruction updating the instrumentation (oboe, clarinet, bassoon, and horn) and added the missing orchestral accompaniment.
It is thought that Mozart’s original score was written for four instrumentalists, 3 from Mannheim, who were in Paris when Mozart was there: flautist Johann Wendling, oboist Friedrich Ramm, and bassoonist Georg Ritter from Mannheim, plus the horn player Johann Stich (known as Giovanni Punto). However, there was no Paris performance, and the score vanished. Mozart suspected local intrigue was involved in silencing his work. The work was commissioned by Joseph Legros for performance at his Concerts Spirituels series. However, the composer Giuseppe Cambini interfered, and the performance never occurred. Although not well-known today, Cambini was extremely active in Paris from the early 1770s – by 1800, some 600 instrumental works had been published under his name, and he had symphonies concertantes performed at the Concert Spirituel starting in 1773.
What has intrigued scholars and performers alike is the fact that the work doesn’t show Mozart at his best, but has enough of a ‘whiff’ of Mozart about it to indicate that he may have been involved somehow with the surviving copyist’s score. The problem, of course, is that this is the only work like that that Mozart wrote, and the difficulty of setting up a definition of ‘normal’ on a unique work is almost insurmountable.
Authenticity aside, performers welcomed a ‘new’ work by Mozart and the work has found a ready audience in the modern age.

Henry Swoboda at Westminster Records with the pianist and producer Karl Welleitner
This recording was made in January 1950 by an ensemble of soloists from the Vienna Philharmonic and the orchestra of the Vienna State Opera, conducted by Henry Swoboda. Czech conductor Swoboda (1897–1990) studied in Prague and was conductor of the Prague Opera (1921–1923) and the Düsseldorf Opera before emigrating to the US in 1939. In New York, he was the music director for two recording companies (Concert Hall and Westminster) and also led the Harvard-Radcliffe Orchestra (1962–1964) before returning to Europe to live in Switzerland.
Performed by
Henry Swoboda
The Vienna Philharmonic and the orchestra of the Vienna State Opera
Recorded in 1950
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