Organum (Lat., from Gk. organon: ‘instrument’, ‘implement’, ‘tool’)
- Norman E. Smith,
- Fritz Reckow
- and Edward H. Roesner
- , revised by Rudolf Flotzinger
A type of medieval polyphony. Early meanings are connected with the organ, but later only with ‘consonant music’. While retaining the collective meaning of ‘polyphony’ in general, from the 12th century it was used specifically to refer to music with a sustained-note tenor (usually a pre-existing part) and more mobile upper part or parts....