Already on 10 January 1833, Schumann first expressed the idea of writing a Piano Concerto in A minor. In a letter to his future father-in-law, Friedrich Wieck, he wrote: "I think the piano concerto must be in C major or in A minor." From 17–20 May 1841, Schumann wrote a fantasy for piano and orchestra, his "Phantasie" in A minor. Schumann tried unsuccessfully to sell this one-movement piece to publishers. In August 1841 and January 1843 Schumann revised the piece, but was unsuccessful. His wife Clara, an accomplished pianist, then urged him to expand it into a full piano concerto. In 1845 he added the "Intermezzo" and "Allegro vivace" to complete the work. It remained the only piano concerto that Schumann finished.