Most of the difficulties particular to modern music center around rhythm and counting. Performers must perfect the accurate, fluent reading of complex rhythms. Conductors must not only understand the rhythmic problems they encounter but also be able to teach the players how to perform them. Composers themselves need to know how best to notate their rhythmic ideas. Bearing these demands in mind, Weisberg clearly explains the new rhythmic complexities and provides exercises for mastering them. Weisberg demonstrates techniques--including "educated faking" and "the common sense rule"--for performing irregular meters, complex polyrhythms (such as seven against four), and metric modulations. He also discusses baton technique, score preparation, electronic aids for synchronized playing, and the tension between flow and accuracy. Weisberg's examples are drawn chiefly from works by Hindemith, Stravinsky, Webern, Ives, Carter, and Boulez, but he also uses examples from Bach, Beethoven, and Brahms to show how devices generally regarded as modern are in fact rooted in earlier practices.