Choosing music for a short film is one of the most consequential decisions a filmmaker makes — and one of the most underestimated. The right score can elevate an average scene into something memorable. The wrong music can undermine even the strongest cinematography. As a film composer who has scored feature films, short films, and commercials, I've sat on both sides of this process. This guide covers what I wish more filmmakers knew before they started looking for music.
Why Music Decisions Should Happen in Pre-Production
Most filmmakers treat music as a post-production problem. They finish the edit, then start looking for something that "fits." This approach almost always produces mediocre results. The composers and music supervisors I admire most approach music the same way they approach casting or locations — as a creative element that shapes the story from the beginning. Even if you're using a royalty-free library, thinking about the sonic world of your film during pre-production will change the way you shoot and edit. Ask yourself early: Is this film scored or soundscaped? Does the music comment on the action, or live underneath it? Is there a sonic motif that can thread through the whole film?
The Four Dimensions of Cinematic Music
When evaluating any piece of music for your short film, consider these four dimensions:
Tempo and rhythm
Does the music's tempo match the visual pace of your scene? A 55 BPM orchestral score creates a completely different tension than a 110 BPM action cue, even if both are "dramatic." Map your editing rhythm to the musical tempo before you commit.
Harmonic language
Major keys generally signal hope, triumph, or resolution. Minor keys signal tension, grief, or ambiguity. But the interesting work happens in between: modal harmonies, unresolved suspensions, chromatic movement. The best film music lives in harmonic ambiguity.
Instrumentation
The choice of instruments carries its own narrative weight. Strings alone read as intimate and vulnerable. Brass adds power and scale. Percussion drives urgency. A solo piano suggests introspection. Before you search a library by "mood," think about what instruments actually serve your story.
Dynamic shape
Does the music build, sustain, or release? The best cues for short films have a clear dynamic arc that complements the scene's emotional trajectory. A track that stays at the same intensity throughout becomes invisible — and that's rarely what you want.
Genres and When to Use Them
Epic orchestral
Full orchestra, heroic brass, sweeping strings. Best for: climactic sequences, title sequences, action. Avoid: intimate character scenes, dialogue-heavy sequences where music competes with words.
Dramatic/tension
Slow-building, sustained strings, sparse instrumentation. Best for: suspense, revelation moments, psychological drama. The tempo is almost always slow (under 70 BPM).
Emotional piano
Solo or chamber piano, minimal. Best for: grief, reflection, memory sequences. One of the most versatile choices for short films with a personal narrative.
Action/battle
Percussive, fast, martial. Best for: fight sequences, chase scenes, historical action. Requires careful editing to keep in sync with cuts.
Children/whimsical
Light orchestral, staccato woodwinds, playful. Best for: animated sequences, comedy, children's content.
Practical Licensing for Short Films
Short films often have smaller budgets than features, which makes royalty-free libraries an attractive option. Here's what to check before using any track:
Festival licenses
If you plan to submit to film festivals, make sure your license covers festival screening. Some free creator licenses don't include this.
Broadcast rights
If your film gets picked up for television or streaming distribution, you'll need a commercial or broadcast license. Plan for this early — it's much easier to secure the right license upfront than to re-license after the fact.
BMI cue sheets
For any production destined for broadcast, you'll need to file a BMI cue sheet listing every music track, its duration, and the composer's PRO information. Libraries with BMI-registered tracks (with proper ISRC and ISWC codes) make this process straightforward.
From One Composer to Another
If you're a filmmaker with any budget at all, consider commissioning original music — even just for the main theme. A composer who understands your story will give you something no library can: music that was made specifically for your film, that grows with your edit, and that is legally clean from day one. If budget doesn't allow for a commission, use a library that was built by a film composer rather than an algorithm. The musical decisions — tempo, harmonic language, dynamic shape — will be more intentional, and the tracks will behave better in an edit.