Designed for a course in twenty-first-century techniques and analysis, this text offers a clear, comprehensive introduction to the basic concepts of post-tonal theory. Each concept is clearly explained and richly illustrated with examples from the musical literature. The text contains model analyses as well as carefully graduated exercises that involve playing, singing, composing, and analyzing. For undergraduate/graduate-level courses in Twentieth-Century Techniques, and Post-Tonal Theory and Analysis taken by music majors.