Background music in Reels, TikTok and Shorts without muted audio

Music is the one part of a short video where the rules are set by somebody else and enforced by a machine. Nothing you do in the edit changes the outcome: either the track is licensed for the account posting it, on the platform it is posted to, or it is not. Everything below comes from the platforms' own documentation as of September 2026.

Four different things get called a copyright problem

The distinction matters because creators treat all four as the same disaster. YouTube is explicit that claims are different from removal requests and strikes, and that a claim usually does not affect your channel or account. A claim is a revenue and reach problem. A strike is an account problem.

Platform libraries and what your account type changes

What YouTube changed on 24 September 2026

The old rule was blunt: a Short longer than a minute carrying an active copyright claim was blocked. YouTube's help centre now states that from 24 September 2026, new Shorts longer than one minute with an active copyright claim will no longer be automatically blocked. The claim itself does not go away, and the owner's policy still decides whether the video is blocked, monetised for them or merely tracked, geography by geography. There is also a length cap on the music itself: depending on the song, you may be able to add up to 90 seconds of music in a three-minute Short. Some tracks are capped lower.

Royalty-free does not mean free, and free does not mean cleared

• Royalty-free describes the payment model: you pay once and use the track repeatedly, rather than paying per play. It says nothing about the price, and nothing about which uses are covered.
• Licences are tiered. A licence for a blog video, a licence for a paid ad and a licence for broadcast are three different products at three different prices from the same catalogue.
• A royalty-free track can still generate a Content ID claim, because the catalogue may have registered the recording in the system. You dispute it and attach the licence, which is why you keep the licence.
• Free download and cleared for commercial use are separate properties. On aggregator sites they come apart constantly. Read the licence next to the download button, not the heading on the page.
• Creative Commons is a family, not a permission. CC BY allows commercial use with attribution; CC BY-NC does not allow it at all.
• Speeding a track up, pitching it or using a cover does not defeat matching. That stopped working years ago.

Which route fits your situation

A checklist before you post

1. Decide whether the post is commercial. If it promotes a product, a service or a brand, it is, whether or not you paid to boost it.
2. Match the library to the account type on each platform, rather than picking a track once and hoping.
3. Never carry a platform-library track to another platform. Build one version with a licensed royalty-free track for cross-posting, and add trending audio natively where it matters.
4. Listen back for music that leaked into the recording from a speaker, a radio or a television in shot. Matching does not care that you did not add it in the edit.
5. Keep any licence you bought, with the date and the track ID, in the same folder as the project.
6. Check notifications within a day of posting. Muted audio and regional blocks are not always obvious from your own feed.
7. If a claim is wrong, dispute it and attach the licence rather than deleting the video.

How Monty handles it

Monty places music under the voice as part of building the video: it picks a track, ducks it beneath your speech and levels loudness for the platform. You upload an MP4 or MOV take from your phone, or write a script and record it with the free browser teleprompter, and Monty cuts pauses and false starts, times captions to the speech inside the safe area, chooses b-roll by meaning, applies your branding and reframes to vertical around your face. The editable preview comes before the render, so a track you dislike is changed before anything is published.

Publishing goes to YouTube Shorts, Instagram Reels, TikTok and Telegram with an approval step and a per-platform title and description; Monty is in closed beta, so publishing access is opened per account while the beta runs. If a specific trending sound is the whole point of a post, add it natively in that app on top of the finished video: the right to that sound comes from the platform and cannot travel with the file. On how music and pacing interact with reach, see our notes on the Instagram Reels algorithm.