In all likelihood, this sonata was composed for Carl Baron von Kaskel, an acquaintance of Schumann and Wagner also, who practiced the clarinet and composition as an amateur. The autograph of this sonata for clarinet and piano by Mendelssohn has only been accessible since the eighties of the twentieth century. Unfortunately, the year of the dating at the end of the manuscript was cut off. However, on a copyist copy sent to us, we find the indication "1824". The clarinet part, fairly easy to perform, was probably adapted to Kaskel's abilities and is particularly suitable for teaching.