Film music is the most widely heard classical music of the 20th and 21st centuries. Hundreds of millions of people who have never attended a concert have experienced the emotional power of a full orchestra — in cinemas, living rooms, and earbuds. The craft behind that experience is the subject of this lesson.
Film music is the most commercially significant branch of classical music composition since the 19th century, and the primary context in which most people have experienced orchestral music. Understanding how it works — technically, psychologically, and historically — illuminates both cinema and music.
THE SILENT FILM ERA (1895-1927): Silent films were never actually silent. From the beginning, films were accompanied by live music — initially solo piano or organ, later small ensembles or full orchestras in major theatres. Music's function was partly technical (it masked the noise of the projector) and partly psychological (it directed the audience's emotional response to the images). Organists and pianists developed a vocabulary of musical 'cues' — passages associated with specific emotions or situations — that they could deploy in response to the action on screen.
THE ARRIVAL OF SOUND (1927-1935): The Jazz Singer (1927) was the first commercial feature film with synchronised dialogue and singing (Don Juan, a year earlier, had a synchronised score and effects only). This created the need for composed film scores — music written specifically for a film, synchronised precisely with the action. Max Steiner's score for King Kong (1933) established the model that would dominate Hollywood scoring for decades: a large orchestra using leitmotifs (specific themes associated with characters or situations, a technique borrowed from Wagner), timed to the second, recorded to match the image.
THE CLASSICAL HOLLYWOOD SCORE (1935-1960): The Hollywood studio system produced an extraordinary concentration of compositional talent. Erich Wolfgang Korngold (The Adventures of Robin Hood, 1938), Bernard Herrmann (Citizen Kane, 1941; Vertigo, 1958; Psycho, 1960), Miklós Rózsa (Ben-Hur, 1959), and Dmitri Tiomkin created scores of genuine classical music ambition within the constraints of commercial filmmaking. Herrmann's score for Psycho — strings only, no brass or woodwinds — is one of the most famous and most imitated film scores ever written, and the shower scene's 'murder music' (high string shrieks) one of the most recognisable moments in film music.
PSYCHOACOUSTICS OF FILM MUSIC: Film music exploits several psychoacoustic principles. Congruence (music that matches the emotional content of a scene) enhances and clarifies the audience's emotional response — minor keys for sadness, major keys for joy, increasing tempo for excitement. Incongruence (music that contradicts the scene's content) creates irony, tension, or horror: the Kubrickian technique of playing cheerful music over scenes of violence (A Clockwork Orange's 'Singin' in the Rain' over assault). Priming (establishing an emotional context before the relevant scene) creates anticipation and heightens response when the scene arrives.
JOHN WILLIAMS AND THE NEO-ROMANTIC REVIVAL: John Williams — composer of Jaws (1975), Star Wars (1977), E.T. (1982), Schindler's List (1993), and dozens of other films — revived the large-orchestra, leitmotif-based Hollywood scoring tradition at the moment it was being abandoned in favour of pop soundtracks and electronic scores. His Star Wars score is essentially a late-Romantic symphony applied to science fiction — drawing on Holst, Stravinsky, and particularly Wagner's Ring cycle. Its success demonstrated that audiences remained receptive to orchestral film music and established the template for all subsequent blockbuster scoring.
ELECTRONIC AND HYBRID SCORING (1970s-present): Electronic film scoring began with Bebe and Louis Barron's all-electronic score for Forbidden Planet (1956); the introduction of the synthesizer (notably Wendy Carlos's A Clockwork Orange score, 1971) created a parallel tradition to orchestral scoring. Giorgio Moroder's synthesizer score for Midnight Express (1978) won the Academy Award, legitimising electronic film music. Contemporary blockbuster scores typically combine live orchestra with electronic production — Hans Zimmer's Inception (2010) and Interstellar (2014), Jonny Greenwood's There Will Be Blood (2007) and The Power of the Dog (2021), and Ennio Morricone's complete body of work represent the range of what film music can be. The relationship between film music and television music has become increasingly porous in the streaming era: prestige television drama employs film composers (Trent Reznor and Atticus Ross scored the HBO series Watchmen; Ennio Morricone's themes for Sergio Leone westerns have been recycled in countless subsequent productions) and treats the score with a seriousness previously reserved for theatrical features. The music supervisor — the professional responsible for licensing existing recordings for use in film, television, and advertising — has become one of the most culturally influential figures in the music industry, capable of reviving dormant careers (Kate Bush's Running Up That Hill received a new generation of listeners after its use in Stranger Things Season 4 in 2022, reaching number one in the UK for the first time — it had peaked at number three on its 1985 release), establishing new artists, and creating cultural associations between songs and visual moments that permanently alter how those songs are heard. Film and television music, in the broadest sense, is now simply music: its boundaries with concert music, popular music, and ambient music have dissolved to the point where the category names seem less useful than the specific qualities of specific works. The scholarly study of film music has accelerated significantly since the 1990s, producing theoretical frameworks — from Claudia Gorbman's concept of 'unheard melodies' (the idea that film music works most powerfully when audiences are not consciously attending to it) to Michel Chion's audio-vision theory (which analyzes the mutual transformation of sound and image in cinema) — that bring analytical rigor to a field previously dominated by anecdote and intuition. Practical training in film composition has also become more systematic: programs at Berklee College of Music, the USC Thornton School, and the Royal College of Music now train students specifically in the technical and collaborative skills required for screen composition. The result is a generation of composers who bring more theoretical sophistication to the work than their predecessors, whose training was often informal or derived from staff positions at studios. Whether this increased sophistication produces better film music is a question that taste and experience must answer individually; what it produces unambiguously is a better-equipped conversation about what film music is doing and why.