AI background music for your videos: what works and what to avoid

Music is the fastest way to make a video feel finished, and the slowest part of most editing sessions. Stock libraries mean twenty minutes of auditioning tracks that almost fit. Generating the track instead flips the problem: you describe the exact energy your edit needs, and audition variations of that, rather than hunting through someone else's catalog.

Describe the job the music does

The biggest prompt mistake is writing a genre wish list ("lofi hip hop chill beats") instead of describing the job. Useful music prompts in the music studio name four things:

• Energy and tempo. "Slow build," "steady mid-tempo," "driving." This is the part your edit actually depends on.
• Instrumentation. "Warm piano and soft strings" and "analog synth and tight drums" produce completely different beds from the same genre word.
• Mood. One or two emotional words. "Confident, unhurried." "Playful, slightly nervous."
• Role. Say "background music under narration" when that is the job. Telling the model the track sits under a voice tends to pull the mix back to where a bed belongs.

"Instrumental, steady mid-tempo, warm piano over soft electronic drums, confident and unhurried, background bed under narration" beats "chill corporate track" every time.

Instrumental unless lyrics are the point

Generated vocals are impressive and almost always wrong for content video. Lyrics fight your narration and your viewer's attention. Ask for instrumental by default, and save the vocal generations for the rare case where the song is the content (an intro theme, a joke, a jingle).

The mechanics and the money

A generation on the Suno models costs 12 credits and returns two tracks, so each run is two auditions for about a dime. Generate three or four variations of your prompt, pick the bed that sits best under your rough cut, and you are done in ten minutes for under a dollar. Suno V5.5 takes a length control from ten seconds to six minutes, and the V4.5+ tier stretches to roughly eight; when you need one polished take at an exact length instead, Eleven Music prices per started minute at 125 credits. As with everything else, the price sits on the button before you commit; the broader credit math is in the costs post.

Fitting the track to the edit

• Cut to the music's grid where you can. Even a rough alignment of scene changes to the beat makes an edit feel deliberate. It is easier to nudge a cut than to retime a track.
• Duck hard under voice. If there is narration, the bed should sit far lower than feels right in isolation. When in doubt, lower it again. (Picking that narration voice well is its own five minute job: here is the method.)
• End clean. Trim the track to end on a resolved note near your last frame rather than fading mid-phrase. Endings are remembered.

Why generated beats stock for repeat use

For a one-off video, stock is fine. The gap opens on series work. A channel or a product line wants the same sonic identity across many videos, and with generation you can reuse the exact prompt to produce siblings of your house sound on demand, matched to each video's length and energy. That consistency is the audio version of the visual discipline in the on-brand images guide, and it is what makes ten videos feel like one channel.