melisma

/məˈlɪzmə/
noun
  1. A group of notes sung to a single syllable of text, often used in vocal music for ornamentation or emotional effect.
    • In gospel music, melisma is often used to express deep emotion.
    • Learning to sing a melisma smoothly requires good breath control.
    • The singer's melisma on the word 'love' stretched across eight notes.
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