He managed to create an atmosphere of mystery, toughness and humour by orchestrating music based on "howls, gunshots and groans". Rose Friedman, writing an appreciation for NPR, says that in Western movies, where dialogue was minimal, "music did the talking". Here you can listen to a 4-minute radio report with its script, and a written version of the story. Both can be accessible to B2 students.
The vocabulary level of the reports is challenging, though, and you will find words like "sneaky tricks, whistles, animal calls, creaks, gunshots, groans, howls, hip, a raucous sound, avant-garde, to be off-and-running, choirmaster, the score, to pay off, to win a prize".