This site describes the development of the German art song in the nineteenth century with links to prominent composers. (
http://w3.rz-berlin.mpg.de/cmp/g_lied.html
)
This radio program features interviews about and performances on Schubert's song cycle Die Winterreise. (
http://www.npr.org/templates/story/story.php?storyId=4109651
)
This comprehensive site provides much information on the life and music of Clara Schumann, one of the great women in music. (
http://claraschumann.net/
)
This site includes biographical information on Robert Schumann and a good recording from his Liederkreis for voice and piano. (
http://www.bbc.co.uk/music/profiles/schumannr.shtml
)
On this site you can fine excellent sound files of Schubert and Schumann songs, some sung by the famous Dietrich Fischer Dieskau, as well a stunning recording of "Der Tod und Das Mädchen" ("Death and the Maiden") by the great contraolto Marian Anderson. (
http://www.kcl.ac.uk/kis/schools/hums/music/ksa/ksa_sound.html
)