a   cappella    rule    of,  666 –67
Michelangelo    ceiling,     719 ,   719six-as-perfect-number (senaria) theory, 587 –88, 603
sixteenth century,
ars perfecta    and,     585 –628,   629 –30,    722
Byrd    and,     670 –89
cyclic  Mass    Ordinaries  and,     459 –500
emulative   composition and,     474 –75
English music   and,     423
imitative   polyphony   and,     546
instrumental    genres  in,  606 ,   617 –28
international   style   and,     453 –59
Josquin and,     549 –84,    601
Lasso   and,     678 ,   712 –22
madrigal    revival in,  723 –51
Palestrina  and,     630 –70
Passion text    polyphonic  settings    and,     776
Protestant  Reformation and,     753 –69
vocal   chamber music   in,  540sixteenth notes, 262 , 515 , 785
sixth mode, 80
6/3 position, 406 , 409
sixths, Landini, 368 , 383 , 441 , 470
Sixtus IV, Pope, 458 –59, 486 , 496
Slaughter of the Holy Innocents, 93 , 177
Smijers, Albert, 565
Smith, John Stafford, 409
So ben mi c’ha bon tempo (Vecchi), 746 , 748
social class,
cathedral   clerical    hierarchy   and,     169 ,   213 –18
dance   style   and,     621
feudal  hierarchy   and,     107 ,   143
Florentine  ballata and,     367 –68
French  urbanization    and,     120 ,   142 ,   143 ,   169 ,   207 –8,     219 ,   226 –28
high    art and,     116
international   musical style   and,     453 –57
madrigal    and,     354 –56,    368