organal style OR-gah-nul stile Your browser does not support the audio element. [ English ] Definition Organum (the earliest style of polyphonic music) in which the tenor sings the melody (the original chant) in very long notes while the upper voices move freely and rapidly above it. Share Share on Facebook (opens in a new tab) Share on X (opens in a new tab) Last Updated: 2016-06-06 00:51:51