 In 2005, it was ranked No.6 in AFI's 100 Years of Film Scores, a list which compiles the greatest 
American film scores.John Williams composed the film's score, which earned him an Academy Award, his second win and first for Original Score, and was later ranked the sixth greatest score by the American Film Institute.The main "shark" theme, a simple alternating pattern of two notes—variously identified as "E and F" or "F and F sharp"—became a classic piece of suspense music, synonymous with approaching danger (see leading-tone).