(not quite thread creep) Just now I ran across a blurb for a book that's coming out next month (August 2001); "How Can We Keep From Singing: Music and the Passionate Life" by Joan Oliver Norton (Norton Pub. ISBN 0-393-02024-X). "Provides an evocative celebration of singing and the creative spirit as it takes a close-up look at the world of amateur musicians and music and emphasizes the human need to play the "invisible instrument" of human creativity." It probably won't cover the subject half as well as these threads, but it has possabilities.