Nationalism
… it [Nationalism] diversified that stream [of European music], enriched it with new idioms and new technical procedures, and so originated many of the new currents that were to flow in the music of the twentieth century. (Grout, 1985, A History of Western Music, p 668)
Both Aaron Copeland and by Ralph Vaughan Williams represent nationalism regarding America and England through the pieces ‘Billy The Kid’ and ‘Fantasia on "Greensleeves”’. Although both scores present a nationalistic element, whereas ‘Billy The Kid’ reflects the somewhat harsh society of that of the Wild West, in comparison 'Fantasia on "Greensleeves"' reflects the lush countryside and likewise higher societal refinement.