http://www.carolinanavy.com/fleet2/f2/zclassicalmusic/ChristophWillibaldGluckhall/shakespeare1.html Message board and live chat about the life and works. http://w3.rz-berlin.mpg.de/cmp/gluck.html Essay from The Grove Concise Dictionary of Music includes portrait and details of changes in opera during his life. http://www.karadar.it/Dictionary/gluck.html Musica Classica Classical Music Dictionary entry features life, operas, portraits and scanned manuscripts, and MIDI audio files. http://www.naxos.com/mainsite/default.asp?pn=Composers&char=G&ComposerID=410 Brief biography and summaries of his operatic and balletic music with recommended recording.