Alongside the versions for clarinet and for viola, there is also one for violin. In a letter 1908 Reger described the sonata as 'a very light, friendly work, not long at all, so that the sound character of the wind instrument does not become tired'. It often seems as though the clarinet (or viola, or violin) is merely commenting on a course of musical events that is presented by the piano. With Ronald Brautigam, piano. 10/10 Highest ranking ClassicsToday, Diapason d'Or.