Dirty Harry "Rawhide", was responsible for creating Callahan's distinctive old-fashioned brown and yellow checked jacket to emphasize his strong values in pursuing crime. Filming for "Dirty Harry" began in April 1971 and involved some risky stunts, with much footage shot at night and filming the city of San Francisco aerially, a technique for which the film series is renowned. Eastwood performed the stunt in which he jumps onto the roof of the hijacked school bus from a bridge, without a stunt double. His face is clearly visible throughout the shot. Eastwood also directed the suicide-jumper scene. The line, "My, that's a big
Dirty Harry the iconic music for both the theme of "" and the "Bullitt" soundtrack, and who had previously collaborated with director Don Siegel in the production of "Coogan's Bluff" and "The Beguiled", both also starring Clint Eastwood. Schifrin fused a wide variety of influences, including classical music, jazz and psychedelic rock, along with Edda Dell'Orso-style vocals, into a score that "could best be described as acid jazz some 25 years before that genre began". According to one reviewer, the "Dirty Harry" soundtrack's influence "is paramount, heard daily in movies, on television, and in modern jazz and rock music". The film caused