See also    elite   culture“intelligibility” (liturgical music) movement, 647 , 649 –53, 671 , 672 , 769
intermedii. See intermezzo
intermezzo, 769
monody  and,     806 –12,    823 ,   826
sixteenth-century   Florentine  intermedii,  803 –12,    831 ,   832intermission play. See intermezzo
international style, fifteenth-century, 378 , 380 , 384 , 422 , 453 –59
intervals, 5 , 73 , 76 , 284 , 285
basso   continuo,    809 ,   811
counterpoint    and,     154 ,   406
demonstration   of,  73
diatonic    pitch   set and,     29 –30,     35
ear training    in,  76 ,    100 –101,   406
parallel    doubling    and,     149 –53
perfect,     274
as  pitch   ratio,   73
staff,   29 –30,     35 ,    73
as  symphoniae,  149“In Thee, O Lord, have I placed my hope” (Clemens), 598 –99
intrasyllabic melodic expansion, 171 –72
Introit, 13 , 15 , 23 , 24 , 79
in  Mass    ordo,    61
troping of,  50 ,    51 ,    52 ,    64 ,    82introspection,
humanism    and,     383introversive semiotics, 643
inversions, 813
Io che dal ciel cader (Caccini), 804 , 808 –9
Io me son giovinetta (ballata), 366
Ionian mode, 553 , 572 , 592 , 596
irony, artistic conventions and, 359 , 363 , 364
Isaac, Henricus, 536 , 538 –39, 544 , 545 , 547 , 559 , 572 , 622 , 679 , 704 , 759 , 798 , 823 , 834
Choralis    Constantinus,    679
Innsbruck,  ich muss    dich    lassen,  759 ,   760
J’ay    pris    amours,  536 ,   538 –39
Missa   Quant   j’ay    au  cuer,    543 –44,    545
Missa   super   La  Spagna,  623 –25