I
Idealism vs. Efficiency, [153].
Imagination—Value of, [11].
Individualism—Danger of in church choir, [112].
Instinctive imitation, [3].
Instrumental music—Expression in, [46].
Timbre in, [66].
Phrasing in, [69].
Instruments—Proportion of, [97].
Transposing, [98-100].
Pitch standards, [101].
Tuning of, [102].
Bowing, [103].
Range of, [107].
Interpretation and expression—Definition, [36].
Interpretation, [36-75].
Emotion in, [38].
Definition, [40].
In vocal music, [43].
Importance of timbre in, [66].