It seems to be a part of the seascape these days, suggests Joseph Horowitz in the NY Times today, in his criticism of the upcoming PBS series "Great Composers." "What finally disapppoints about (the series)," Horowitz writes, "is not the restriction on intellectual and musical content, but something more basic. For some time now, the canon of Western classical music has not defined what is musically best and most prestigious." "Already," Horowitz goes on, "the concept of an elite caste of dead European composers, sources of timeless and eternal high art, caricatures itself." Is it too late, in Horowitz's words, "to hope for something better from public television:something more timely, more challenging, more John Dalmas [log in to unmask]