noun, plural or·ga·na [awr-guh-nuh] /ˈɔr gə nə/, or·ga·nums.
- the doubling, or simultaneous singing, of a melody at an interval of either a fourth, a fifth, or an octave.
- the second part in such singing.
Origin of organum
Examples from the Web for organum
He called his system an “organum” or “diaphony,” and to sing according to his rules was called to “organize” or “organate.”
The transition from organum to discant was effected about the year 1100.Music in the History of the Western Church|Edward Dickinson
By studying the rules prescribed for the organum, the singers could add the proper intervals to the melody.
The combination of the faux bourdon and the remnant of the organum gives us the foundation for our modern tone system.
In the organistrum three strings, acted on simultaneously by the keys, produced the rude harmony known as organum.