Concerto for Flute, Harp, and Orchestra (Mozart)  The Concerto for Flute, Harp, and Orchestra in C major, K. 299/297c, is a concerto by Wolfgang Amadeus Mozart for flute, harp, and orchestra. It is one of only two true double concertos that he wrote (the other being his Piano Concerto No. 10; though his Sinfonia Concertante for Violin, Viola, and Orchestra could just as well be considered a "double concerto"), as well as the only piece of music by Mozart for the harp. The piece is one of the most popular such concertos in the repertoire, as well as often being found on recordings dedicated to either one of its featured instruments. Mozart wrote the concerto in April 1778, during his seven-month sojourn in Paris. It was commissioned by Adrien-Louis de Bonnières, duc de Guînes (1735–1806), a flutist, for his use and for that of his eldest daughter, Marie-Louise-Philippine (1759–1796), a harpist, who was taking composition lessons from the composer, at the duke's home, the Hôtel de Castries. Mozart stated in a letter to his father that he thought the duke played the flute "extremely well" and that Marie's playing of the harp was "magnifique". As a composition student, however, Mozart found Marie thoroughly inept. The duke (until 1776, the comte de Guines), an aristocrat Mozart came to despise, never paid the composer for this work, and Mozart instead was offered only half the expected fee for the lessons, through de Guines' housekeeper. But he refused it. (For his tutoring, Mozart was owed six Louis d'or.) Little is known of the work's early performance history, though it seems probable that father and daughter played it first. In the classical period, the harp was still in development, and was not considered a standard orchestral instrument. It was regarded more as a plucked piano. Therefore, harp and flute was considered an extremely unusual combination. Currently, there is much more repertoire for a flute and harp duo, especially without orchestra. Much of this repertoire was written by composers in the nineteenth century. Mozart's opinion of the harp, however, was perhaps dubious at best, for he never wrote another piece that employed it.