Although this technique has been used in many scores by Williams and other composers, employs this effect with unusual frequency, particularly for scenes involving the compsognathus. To create a sense of chaos and terror, Williams provides a series of pitches to a group of instruments and instructs them to play them quickly ad lib for a given number of measures. Rather, he developed new material that focused on the danger of the narrative and drew out percussion such as 'congas, bongos, 'jungle drums,' gourds, log drums, and tabla,' according to Wikipedia, which also notes that Williams pulled another nifty trick out of his composer's bag.Īnother common stylistic element in this score is aleatoric writing. Since the sequel was less about theme park ride awe and more about immersive jungle adventure, Williams didn't revisit the primary themes from Jurassic Park. Both Spielberg and Williams returned for The Lost World: Jurassic Park.