The fifteenth edition of the "Encyclopædia Britannica" states that "while there are no sounds that can be described as inherently unmusical, musicians in each culture have tended to restrict the range of sounds they will admit." A human organizing element is often felt to be implicit in music (sounds produced by non-human agents, such as waterfalls or birds, are often described as "musical", but perhaps less often as "music"). The composer R. Murray states that the sound of classical music "has decays; it is granular; it has attacks; it fluctuates, swollen with impurities—and all this creates a musicality that comes before any 'cultural' musicality." However, in the view of semiologist Jean-Jacques Nattiez, "just as music is whatever people choose to recognize as such, noise is whatever is recognized as disturbing, unpleasant, or both" . (See "music as social construct" below.)""'