City Lights in the context of "Silent cinema"

A silent film is a film without synchronized recorded sound (or more generally, no audible dialogue). Though silent films convey narrative and emotion visually, various plot elements (such as a setting or era) or key lines of dialogue may, when necessary, be conveyed by the use of inter-title cards.

The term "silent film" is something of a misnomer, as these films were almost always accompanied by live sounds. During the silent era, which existed from the mid-1890s to the late 1920s, a pianist, theater organist—or even, in larger cities, an orchestra—would play music to accompany the films. Pianists and organists would play either from sheet music, or improvisation. Sometimes a person would even narrate the inter-title cards for the audience. Though at the time the technology to synchronize sound with the film did not exist, music was seen as an essential part of the viewing experience. "Silent film" is typically used as a historical term to describe an era of cinema prior to the invention of synchronized sound, but it also applies to such sound-era films as City Lights, Modern Times and Silent Movie which are accompanied by a music-only soundtrack in place of dialogue.