The song that was two songs

A melody written for a funeral in 1860 became a stadium chant in the 1970s. The notes are the same. Almost nothing else is.

Tempo accounts for part of it. The original was marked slow, and at that speed the long intervals between notes read as weight. Doubled in speed, the same intervals read as momentum. Harmony accounts for more: the funeral setting used minor chords underneath, the chant uses major ones, and a melody that is ambiguous on its own takes its emotional colour from whatever is placed beneath it.

The case is useful because it separates two things that listeners usually experience together. A tune is not a feeling. A tune is a sequence of pitches that becomes a feeling once a tempo, a harmony, a timbre and a context have been supplied, and all four of those are decisions made by performers rather than properties of the notes.

Composers have exploited this deliberately. The same four-note figure can open a comedy and close a tragedy within one evening's programme, and audiences rarely notice that they have heard it twice. What they notice is the difference in instrumentation, which they attribute to the music itself.

There is a lesson here for anyone learning to listen rather than simply to hear. Asking 'what is this piece doing to me' leads nowhere useful, because the answer is already the experience. Asking 'which decision is doing it' is answerable: cover the harmony and the melody loses its sadness; halve the tempo and the chant becomes a hymn again. The experiment takes thirty seconds and changes how you hear everything afterwards.