The opening page of Nielsen's concert overture Helios (1903) is one of the most magical dawn sequences in music (Ex. 3.1). Long pedal notes in the lower strings suggest a seemingly infinite sense of musical time and space, of floating weightlessly in the musical ether: the pause over each second bar momentarily suspends the perception of regular clock time before the work has properly begun, so that the piece literally begins in a state of timelessness. The hairpin dynamics, rising almost imperceptibly from pianississimo and falling back again, reflect the vibrating amplitude of the bowed open string: it is as much a description of the sound object or ‘Klang’ as a performance direction. The horn calls that then gradually rise above the bass pedal sound almost impossibly distant, gently arching upwards first through the octave and then to the flat seventh, as though sounding the upper partials of a single glowing harmonic spectrum. As this sound slowly echoes and peals, the resonance gaining strength through its waxing reiteration, the upper strings begin to weave a gently flowing quaver figure, gradually filling in the gaps between the widely spaced intervals of the horn calls and bass, so that the orchestral texture emerges as if from a clearing morning mist. As this slowly shifting curtain of sound (or ‘Klangfläche’) grows, the harmonic palette also widens and enriches itself, the rocking fifth steps in the bass (a horizontalisation of the earlier vertical chord structures) followed eventually by the first chromatic descent (b. 30), tilting the music momentarily towards the flat side and casting aside the drowsy somnolent sevenths of the opening page.