Citizen Kane

Orson Welles' Citizen Kane pioneered a variety of filmmaking approaches and techniques, marking it out as a landmark of cinema. In particular, Welles used overlapping dialogue, with characters talking over each other; a soundtrack of incidental and background noises; deep focus shots that placed entire shots of different depths completely into focus; and a story that unfolded in a nonlinear fashion by using flashbacks unreliable narrators, and contradictory facts.