resonance

Resonance — both a physical acoustic phenomenon and a central aesthetic principle of Dutilleux's music. He was fascinated by the way sound continues after its initial attack, how overtones persist and transform, and how one sonority can shadow or anticipate another. This preoccupation named both his solo piano work Résonances (1965) and the two-piano set Figures de résonances (1970–76). The Piano Sonata's third movement creates bell-like resonances through overlapping sustained notes at extreme registers.

Resonance in Dutilleux demands attention to the sustaining pedal not as a blurring device but as a precision tool for carrying specific harmonics forward. Practise with half-pedal changes rather than full lifts wherever Dutilleux notates sustained resonances. The sound that lingers is compositional material, not an accident.