Haslinger's unauthorised dissemination of Chopin's early C minor sonata (he had gone as far as engraving the work and allowing it to circulate, against the composer's wishes) may have increased the pressure Chopin had to publish a piano sonata, which may explain why Chopin added the other movements to the "Marche funèbre" to produce a sonata. The work was finished in the summer of 1839 in Nohant (near Châteauroux), in France, and published in May 1840 in London, Leipzig, and Paris. The work was not furnished with a dedication.