This "Concerto for Flute and Harp in C major" K299/297c was composed in April 1778. Mozart was 22 years old that year. In Paris, France, he met the famous flutist at the time, the Duke Zini, the French ambassador in London. The Duke's daughter was a harpist and a student of Mozart. This song was composed by Mozart in 1778 at the invitation of the duke and his daughter, so that the duke and his daughter could perform it together at the wedding ceremony of the duke's daughter. It was intended to express the good relationship between the father and his daughter. This song is a congratulatory song, which is both elegant and vivid in expression. This concerto is not only a perfect combination of flute and harp, but also one of the typical examples of the duet concerto theme. It is still a masterpiece in the flute and harp repertoire today. It is actually a duet, two expressive and unique instruments speaking to each other and to the symphony orchestra.