- Richard Strauss' Sonata for Violin and Piano in E flat major op. 18 is a work with a Janus face, illustrating the past and the present and pointing ahead to the future. - It mirrors the composer's musical roots, such as in the second movement which contains references to Beethoven's 'Pathetique' and Schubert's Der Erlk�nig, whilst the first and final movements are influenced by Schumann, on the one hand, and express Strauss' current enthusiasm for Wagner's Tristan, on the other. - By contrast, the hidden allusions to his own tone poem Don Juan show the way the composer wanted to go in the near future.