Time is of the essence in music because the ear can only perceive sequentially-one thing at a time-unlike the eye, which is capable of panoramic view. Silence and Slow Time proposes a way of thinking about music that is faithful to the experience of playing or listening during a real performance. Boykan argues against the common assumption that thematic relationships automatically insure musical coherence, because the repetition or the transformation of a theme is only meaningful if we consider when it occurs. This argument is developed through a close reading of passages from the full range...