The scene that follows is one of the grandest romps ever to grace an adventure movie. The concept of a chase sequence on a rail track provided Spielberg a special challenge, since one of the cars must always be behind the other. Spielberg would liven up the action with multiple tracks, speeds, heights, and mid-air leaps, creating a vigorous cinematic tour de force. (A similar, if less impressive, sequence involving motorcycles would find its way into the third Indy film.) Williams' music is equal to the occasion, whipping along at breakneck speed. The main motif is a frenetic movement in the strings, recalling passages of Raymond Scott's "Powerhouse" -- which Carl Stalling popularized in the 50′s with his library of cartoon scores. "Powerhouse" is now a cartoon staple, and has even found its way into major motion pictures such as James Horner's adaptation for "Honey, I Shrunk The Kids," and Williams puts the idea to good use here, interspersing healthy bursts of action as Indy swoops, swerves and struggles to remain one step ahead of the gun-wielding Thuggee bands. Williams also includes some interesting Prokofien rhythms in the strings. Mola Ram's theme can be heard several times (the only appearance of his theme to make it onto the original soundtrack album) as the irate priest orders his followers to cut the supports on an enormous basin of water, effectively flooding the tunnels in which Indy has sought refuge.
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