This study investigates why Arnold Schoenberg, despite his status as a foundational figure in modern music, remained a polarizing and controversial figure throughout his career. Charles Rosen, a distinguished pianist and musicologist, utilizes his dual expertise in performance and theory to examine the evolution of Schoenberg’s musical language. By situating the composer's work within the broader Expressionist movement, Rosen argues that Schoenberg’s radical departure from tonality and subsequent development of the twelve-tone technique were deliberate attempts to reconcile modern innovation with classical structural integrity.

This work is widely regarded as a definitive, concise introduction to Schoenberg’s compositional logic and historical significance. The text is noted for its ability to bridge the gap between complex musicological theory and accessible historical narrative, making it a standard reference for students and scholars alike.