Cinematically the giallo, even from the earliest Bava-films up to Dario Argento's latest, has always been highly stylised. Much attention is paid to photography and editing, which renders most gialli exciting mise-en-scene and narrative structures. Experiments with point-of-view-shots are common and much work often go into the murder scenes which unlike in most horror/thriller cinema have an active part in the story's development and in the portraying of the killer. The soundtrack also plays a vital part in most gialli. Like in the spaghetti westerns the soundtracks often feature a series of themes. For instance the murderer often has his/hers theme and sometimes different ones to underscore the emotional state of him/her. Psychology is always an important factor in the giallo and there is often music to emphasise it. For instance in Dario Argento's Deep Red (Profundo Rosso, 1975) the murderer even carries around a tape recorder with music to evoke the murderous feelings. All this of course makes for a highly cinematic genre, and sometimes it's impossible to see how a literary genre inspired it all.