Bach did indeed convey an enormous range of human emotion, but I don't
think he conveyed the "entire" range. Later composers, particularly in
this century, learned to convey rage, despair and, on the more positive
side, the erotic. And I could probably name other emotions that are not
readily evident in Bach's work.
Incidentally, I agree with you that it is in his solo music that Bach is at
his most profound. I'm particularly fond of the 48, but almost any of his
music for solo instrument has great depth to it.
Richard, who invites you to visit his music, outdoors and other WWW sites at:
http://infoweb.magi.com/~richard/