Melisma

What it means

A melisma is a group of several notes sung on a single text syllable. Its opposite is syllabic performance, in which exactly one note falls on each syllable. Between the two lies neumatic writing, with a few notes per syllable. This distinction is one of the most important organizing features for vocal music at all, because it describes how closely melody and language are bound to each other.

In the notation

Melismas are recognized by several notes joined by a slur or by shared beams and assigned to one syllable. In the square notation of chant, groups of neumes stand over the syllable concerned. The syllable distribution in the printed text shows where a melisma begins and ends.

Musical use

Melismas set accents: they highlight a word, extend a moment, or give the music room to detach itself from the language. In Gregorian chant, melismatic passages are reserved for the elevated points of the liturgy, while readings and psalms remain syllabic. In Baroque opera and oratorio, melismas become extended coloraturas that carry both expression and virtuosity; they often fall on key words of the text. In plain hymn and congregational music, by contrast, they are deliberately avoided, because they make singing together difficult.

Performance practice

Keep the vowel the same throughout the whole melisma; changing vowel colours break up the line. Practise the note sequence first slowly and in groups, so that it does not sound like a chain of individual notes. Watch for even mobility without attacking every note, unless the style calls for articulation. Plan the breath so that the melisma lies in one arc. In choir, agree where the closing syllable falls, so that the group moves on together.

Bear in mind that the syllable distribution in editions often comes from the editor: with older music it is often not clearly transmitted, and different editions resolve it differently. Fix a distribution within the group and write it in. Keep the vowel the same throughout the whole melisma and practise the note sequence in groups instead of as a chain of individual notes. Watch whether the style calls for articulation of the individual notes.