This is one of the only 2 concertos Chopin left behind, as he did not like to compose for the orchestra. And these 2 concertos were written when he was young, at the beginning of his career, when it was expected from him to write his own showpieces.
The concerto itself is mostly important for the piano composition as the orchestra remains in a way overshadowed by the piano. The composition opens up with beautiful and simple music themes. And then comes the slow second movement, which as Chopin explained to a friend "is not meant to create a powerful effect: it is rather a Romance, calm and melancholic, giving the impression of someone looking gently towards a spot which calls to mind a thousand happy memories. It is a kind of reverie in the moonlight on a beautiful spring evening”. Chopin probably meant to express his deep feelings for his classmate Constantia Gladkowska when he was writing this music. Unfortunately, he never won Constantia's heart, as he was described by her as "temperamental, full of fantasies, and unreliable". A suggested title for this music is inspired by Chopin's words: "Reverie in the moonlight".