http://www.hearts-ease.org/cgi-bin/index_c.cgi?period=Early%2020th%20Century Heart's Ease Conservatory outlines the rise of post-romantic music and lists major composers with biographies, suggested reading, and additional resources. http://www.british-composers.me.uk/rubbra.htm A short introduction to one of Rubbra's works http://www.hearts-ease.org/cgi-bin/index_c.cgi?period=Mid%2020th%20Century Traces a return to baroque and classical forms and the rise of jazz with accompanying composer biographies and related resources. From Heart's Ease Conservatory. http://www.chez.com/craton/musique/pijper/pijper.htm (1894-1947) Includes biography, work list, discography, and bibliography.