Arnold Schoenberg completed his Kammersymphonie, Op. 9, in July 1906, singling it out as a "true turning point" in his compositional style . . . "the last work of my first period that existed as a single through-composed movement." To prepare himself for the creation of a one-movement work built on an internal, multi-movement structure, the composer studied the great examples from the classical literature: Beethoven's Grosse Fuge,...