 Gregson @-@ Williams ' score is darker to follow suit with the film . Gregson @-@ Williams wanted Caspian 's theme to convey a vulnerability , which would sound more vibrant as he became more heroic . It originally used a 3 / 4 time signature , but the opening scene required a 4 / 4 and thus it was changed . To represent Miraz 's cunning , the heroic theme from the first film was inverted . For Reepicheep , a muted trumpet was used to present his militaristic and organised character . Gregson @-@ Williams considered arranging his theme for a small pennywhistle , but found that it sounded too cute and broke the tension of the night raid . 
