of the piano part. This ambiguous harmonic progression is made of chords that lack one note, leaving it unclear what the harmony is. The first chord lacks a third, so could be B major or B minor. The second has only the interval of a third, so it is unclear whether it is the first inversion of a D-sharp minor chord or the second inversion of F-sharp major. This ambiguity is only resolved with the entry of the voice, when the harmony of B minor with its dominant, F-sharp major, is established. The piano part, consisting almost entirely of block chords that gradually become denser, dominates the song and does much to give it its feeling of inexorability, and its brief abandonment (displaced by a succession of increasingly dissonant chords) at the climax of the song signals the frantic horror of the poet. At this point, the initially ambiguous harmony returns with a modulation to D-sharp minor on the words Was äffst du nach mein Liebesleid (bar 47). The song is 63 bars long, and in a typical performance lasts between 4 and 5 minutes. It is in the key of B minor, the same as Schubert's Unfinished Symphony. References External links , Dietrich Fischer-Dieskau, Gerald Moore (Franz Schubert – The Song Cycles, Deutsche Grammophon) Lieder composed by Franz Schubert Musical settings of poems by Heinrich Heine Compositions in B minor 1828 compositions