Sentence:  HPSCHD is, literally, describable — six harpsichords, movie and still projections of lunar and terrestrial landscapes (courtesy of NASA), a vertiginous polyglot of quaquaversal dispersion, a <WSD>Babeldom</WSD> of visual and aural stimuli — but, like nearly all of Cage's work, its impact lies totally in the experiential effect of being there. 
Meaning of the word marked with <WSD> tags:  A state of noisy confusion and chaotic activity