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A sound utility. It is not to be "listened to" as music. It operates to bring about in a space effects comparable to light and heat. first edition contains vellum cover / reverse designed by ck. second edition on gray paper. Liner notes on back cover: this is a utility. it functions as do light and heat, ill-arbitrarily. this is to be turned on and thus differs from music which is to be played. this is not to be experienced nor followed, it is antithetical to: for sitting before, for facing, for listening to. increasing and decreasing the level of volume is not increasing and decreasing efficacy; standards will vary with and within temperaments. this utility has a duration and requires re-engagement according to need for persistency of conditions effected.