en Altadefinizione. The musical performance of Gustav Mahler's Second Symphony is interactively connected with the visual interpretation of the piece. The arrangement of the visualization concentrates on what the music expresses and the emotions it brings forth. Thus, Gustav Mahler's cultural-historical setting and the sources of his own inspiration do not come into play in this visualization. This work is a matter of blending together two interpretations: one expressed musically and the other visually.