4 songs without words Op. 19 1 and 2 and Op. 30 1 and 4 in a version for double bass and piano by Karl-Hans Bonzelett. This was a pupil of Prof. Rolf Heister who writes about the pieces: "I have studied the Mendelssohn's transferences (songs without words) with joy. The works "lie" to the instrument well and contribute certainly to the musical development of the players. One can bring the pieces well to the blade because the play positions are normal. Thousand thanks for the splendid work!" Other songs are in work.