Melisma is a singing technique where one syllable of a word stretches across many different notes. Instead of singing one note per syllable like you might in “Happy Birthday,” a singer using melisma takes a single syllable and lets their voice dance up and down through several pitches.

You've heard melisma countless times even if you didn't know its name. When singers perform the national anthem and turn “free” into “fre-ee-ee-ee-ee” with their voice swooping through different notes, that's melisma. Gospel singers, R&B artists, and opera performers use it constantly. Think of how Mariah Carey or Whitney Houston could take one word and make it into a whole musical phrase, their voices gliding smoothly from high notes to low notes and back again.

It's been part of music for thousands of years, appearing in Gregorian chants, Jewish cantorial singing, and traditional music from the Middle East and India. In Western pop music, melisma became especially popular in the 1990s and 2000s, though some listeners felt singers started overusing it, adding vocal runs to every word when simpler singing would have worked better.

The technique takes real skill: the singer must control their voice precisely while moving quickly between notes, all while making it sound effortless and beautiful.