Music for animation that moves with your characters
Upload your animation and Sonilo makes music around it: bouncy for a character entrance, quiet for an emotional beat, and big where the action lands. Start from a preset or describe the world and the characters yourself.
Start from a preset
Sign in to generate. The create page shows the credit cost before anything runs. Music you generate is for personal use on Free and Creator; Pro, Premium, Enterprise and eligible API users get commercial use rights.
Library
Tracks for animations
For a bouncy character entrance or walk cycle
Playful Flute Bistro · 4:28 · Jazz · Playful · 162 BPM
Under a gentle storybook opening
Dreamy Harp Fantasy · 2:30 · Classical · Calm · 99 BPM
For an action sequence with big hits
Awakening Orchestral Build · 1:00 · Cinematic · Inspiring · 125 BPM
Under a quiet emotional beat between characters
Bittersweet Piano Reflection · 2:57 · Classical · Emotional · 81 BPM
For a short looping animation posted on social
Retro Synth Funk Groove · 3:02 · Pop · Upbeat · 118 BPM
Library tracks are free for personal use. Commercial use needs Pro or above. More tracks like these in the music library
01
In animation, every frame is a decision
Live action captures movement; animation builds it frame by frame. That changes how music fits. Nothing in an animated shot happens by accident, so the audience expects the sound to be just as deliberate. A hand that waves, a character that lands from a jump, a door that slams: viewers notice when the music lines up with those moments and feel something is off when it almost does.
It also means the music can shape the animation, not just follow it. Many animators block out their timing against a rough music track and then refine the motion to it. Whichever comes first, think of music and movement as one timeline.
02
Timing music to frames
At 24 frames per second, a tempo of 120 BPM puts a beat every 12 frames, and 90 BPM puts one every 16. Those numbers make it easy to plan key poses on beats: a walk cycle with a step every 12 frames will lock to a 120 BPM track without any adjustment. At 30 frames per second, 120 BPM gives a beat every 15 frames.
You do not need every key pose on a beat. Put the important ones there: the landing, the punch, the reveal of a new character. Let secondary motion drift freely in between, so the animation does not feel mechanical.
Anticipation matters as much as the hit itself. A character winding up before a jump or a throw usually takes several frames, and music that rises or pauses through that windup makes the release land harder. Plan the musical lift to start where the anticipation pose begins, not on the action frame.
- 24 fps at 120 BPM: a beat every 12 frames.
- 24 fps at 90 BPM: a beat every 16 frames.
- 30 fps at 120 BPM: a beat every 15 frames.
03
Hitting the action, but not all of it
There is a style of cartoon music that hits every single movement: each step a pluck, each blink a chime, each fall a slide whistle. It can be charming in short comic pieces, but across more than a minute it becomes tiring and makes the film feel young. Most modern animated shorts hit the big moments and let the music flow freely under everything else.
Pick the three or four actions in a sequence that carry the story and make sure those land. A character finally reaching the top of a cliff deserves a musical arrival. The ten steps it took to get there do not each need one.
04
Character beats and themes
Animation leans on character more than almost any other form, and music is one of the fastest ways to establish who someone is. A clumsy character suits bassoon or tuba, a tiny nimble one suits pizzicato or plucked synths, a villain suits low brass or a dark pad. Give your main character a short recurring idea and bring it back at key moments, changed to match how they feel.
Character beats, the small pauses where someone realizes something or changes their mind, often work best with a short change in the music or a moment of near silence. A held breath in the music makes a held expression on screen land harder.
05
Building a world with instruments
An animated world can be anything, so the music has to tell the audience what kind of place they are in. A forest kingdom suits harp, woodwinds and soft strings. A city of robots suits plucked synths and clockwork percussion. An underwater world suits slow pads, bells and gliding melodies. A cozy everyday setting, a kitchen or a small town, suits acoustic guitar, piano and light percussion.
Pick a small set of instruments for your world and stay with them. A consistent palette makes the world feel real, and it leaves room for a single new instrument to mark a big moment, such as brass entering for the first time when the hero finally acts.
06
Uploading an animation
Sonilo reads cuts, pacing and scene changes from your upload. Animated shorts with clear shot changes give it a lot to work with. A single long shot full of movement inside it, such as one continuous camera move through a scene, has fewer cuts for the music to follow, so describe the moments you want hit in your direction: a build into the jump, a quiet middle, a big ending.
Upload the most finished version you have. A color pass is not necessary, but the final timing is. If you change the timing of a sequence afterwards, generate again for the new render.
07
Sound effects, voices and music sharing space
Animated films are often packed with sound effects: whooshes, impacts, squash and stretch sounds, footsteps. When the action is busy, thin the music out so the effects can be heard, and let the music take over in calmer moments. A big impact usually sounds best with a short gap in the music right before it.
If your animation has voice acting, treat the music as you would under any dialogue. Keep it low, avoid moving melodies under lines, and leave the speech setting on when you upload so the voices stay while the music is replaced.
08
Formats and endings
A 2 to 10 minute animated short for festivals or YouTube can carry a full musical arc: an opening, a theme, a climax and a resolved ending. Short looping animations for Instagram or TikTok, often 5 to 15 seconds, need music whose ending sits comfortably against its start so the replay feels smooth. Motion comics and animated explainers sit in between and usually need a steadier bed under narration.
End on the image. Whether it is a final gag, a closing hug or a title card, let the last musical hit or chord fall on the frame where the story ends, and keep any credits music short.
How to
How to make music for animation
1
Upload the render
Upload your animated short, loop or sequence. Sonilo reads its cuts, pacing and scene changes.
2
Pick a preset or describe the world
Choose Cartoon bounce, Storybook, Action sequence, Quirky world or Emotional beat, or write your own direction naming the moments to hit.
3
Generate and export
Generate on the create page, which shows the credit cost before anything runs. Check both versions against your key poses, set the music level, and export.
FAQ
Questions before you start
How do I time animation to music?
Work out how many frames fall on each beat. At 24 fps, 120 BPM gives a beat every 12 frames and 90 BPM every 16. Put the key poses that carry the story on beats and let secondary motion move freely between them.
Should the music hit every movement?
Only in short comic pieces. Across a longer film, hitting every action becomes tiring. Choose the three or four moments in each sequence that matter most and make sure those land.
Can I upload an animatic instead of a final render?
You can, as long as its timing is close to final. The music is built around the timing of the video you upload, so if the shots change length later, generate again for the new version.
What music suits a 2D cartoon compared with a 3D short?
It depends on tone more than technique. Comic pieces in either style suit pizzicato strings, woodwinds and playful percussion. Emotional or adventurous shorts suit fuller orchestral or cinematic music. Start from the preset closest to your story.
Can I use this music in videos I publish, monetize or make for clients?
It depends on your plan. Music you generate on Free or Creator is for personal use only. Pro, Premium, Enterprise and eligible API users get commercial use rights, which cover monetized channels, client work and ads under the current terms. Tracks from the Sonilo music library are free for personal use, and commercial use of them also needs Pro or above.
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