Odo. See Eudes,
O Domine, adjuva me (Byrd), 679
Oedipus tyrannis (Sophocles), 780
Offertory, 13 , 34
antiphon, 24 –25, 35 , 79
in Mass ordo, 61
Palestrina cycle of, 632 , 663 –66, 667
tropes and, 50Office, 20 –23, 48 , 72 , 99 , 310
Hucbald antiphons, 80
polyphonic elaborations, 162
versus and, 89
votive antiphons and, 94 –99Office of Martyrs, 23
Öglin, Erhard, 691
oktoechos (eight-mode cycle), 28 , 73
“O lá o che bon eccho” (Lasso), 792
Old Hall manuscript, 409 –18, 429 , 461 , 513
Old Roman chant, 62 , 63
old style. See stile antico
“Old Way of Singing,” 25
oltremontani madrigalists, 723 , 724 –33
O magnum mysterium (Palestrina), 642 –44, 667
O magnum mysterium (Sartori), 667 , 668 –69
On a parole/A Paris/Frese nouvele (motet), 237 –38, 239
isorhythm and, 266O nata lux de lumine (Tallis), 673 –74, 678
“On Baptism” (Augustine), 70
onomatopoeia, 331 –32, 333 , 349 , 364 , 711 , 712 , 716 , 717 , 733 , 749
“On the Invention and Use of Music” (Tinctoris), 453 –54, 536
opera,
Baroque, 797
beginnings of, 127 , 812 , 824 , 826 –27, 832 –33, 834
music vs. words and, 827
noumenal and phenomenal music in, 827
presages of, 780 , 826
Wagner and, 138 , 139 , 141 , 142