 John Williams (I) (qv) composed a piece of music specifically for  the movies trailer, and it is found on the soundtrack as "The  Prologue". As of March 2002, he has done this only once before, for  Steven Spielberg (I) (qv)s _Hook (1991)_ (qv). (However, on the  collectors edition of the soundtrack for _Jaws (1975)_ (qv), a  previously unreleased track appears called "Shark Attack" 