four-part harmony
Noun
Meaning
harmony in which each chord has four notes that create four melodic lines
Source: WordNetSynonyms
Hypernyms
Examples
Easily learned and incorporating singers into four-part harmony, shape note music was widely used by evangelical preachers to reach new congregants.
The bass line of the standard version differs little from the second voice part shown in the original, and there is a standard version in four-part harmony for choirs.