Leonard B. Meyer

"In 'pure' instrumental music, the strategies chosen by composers to create unity were responsive to the tenets of Romanticism...Even in the absence of an explicit program, motivic continuity created a kind of narrative coherence. Like the chief character in a novel, the 'fortunes' of the main motive--its development, variation, and encounters with other 'protagonists'--served as a source of constancy throughout the unfolding of the musical process."

"Because of the variables and the complexity of their interaction, the data assembled by descriptive musicology yield relatively few observable regularities."