Twentieth-century music shifted its focus from the symbol to the signal

Magnusson (following Erickson and Kvifte) argues that across the twentieth century musical attention moved from notated notes — discrete symbols, the black blobs on staff paper — to the timbral composition of sonic spectra, i.e. the signal itself. Recording and synthesis let composers work directly with sound as material rather than instructing pitches to be realised later. This is why sound design, spectra, and timbre become primary compositional dimensions in electronic and digital music, whereas in the older symbolic paradigm timbre was a fixed property of the chosen instrument. The shift reframes ‘composition’ from arranging note-symbols to sculpting signal.

Examples

A Varèse score calling for ‘sound-masses’ and ‘shifting planes’ rather than melodies; a spectrogram as a working score; timbre-first patch design in a synth versus pitch-first writing on a staff.

Assessment

Explain the distinction between working with the symbol and working with the signal, and give one twentieth-century technology that enabled the move toward signal-based composition.