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There is no number of seconds of a song that is automatically fair use in the United States. The U.S. Copyright Office says there is no legal rule permitting a set number of musical notes or a percentage of a work. A brief clip can still infringe; whether an unlicensed use is fair depends on its circumstances and the four factors in copyright law.
Why there is no “safe” number of seconds
U.S. copyright law sets no stopwatch threshold for music. The Copyright Office states that there are no legal rules permitting use of a specific number of words, musical notes, or a percentage of a work (U.S. Copyright Office fair-use FAQ). So claims that 5, 10, or 30 seconds are automatically allowed are not reliable legal rules.
Duration is only part of the analysis. A short excerpt may take the “heart” of a song, while courts have sometimes found use of an entire work fair in particular circumstances. Neither brevity nor a particular percentage settles the question. The Copyright Office’s Fair Use Index summarizes court decisions but is not a substitute for legal advice.
How the four fair-use factors apply to a song
Section 107 of the Copyright Act calls for a case-by-case assessment of four factors (17 U.S.C. § 107). Courts weigh them together; no single factor or label decides the outcome.
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- Purpose and character. Explain what the excerpt does in the new work. Is it being used as the subject of criticism or commentary, or merely as background decoration? Commercial use can count against fair use, but it does not automatically make a use unfair. Nonprofit or educational framing does not automatically make it fair either.
- Nature of the copyrighted work. Songs are highly creative works, a quality that generally makes this factor less favorable to fair use than it might be for factual material. It is one factor, not an automatic bar.
- Amount and substantiality. Consider both how much is taken and how important that part is to the song. A brief signature hook may be qualitatively significant even if it represents little of the full track.
- Effect on the potential market. Consider whether the use could substitute for the original or harm an existing or likely market for it.
These questions help describe the facts; they are not a calculator or a guarantee. The Copyright Office says it cannot assess an individual use or provide case-specific legal advice.
Fair use is not the same as platform approval
A platform’s automated copyright process does not decide whether a use qualifies as fair use. Fair use is a legal analysis; a platform license is permission for particular uses under its terms. A copyright claim or automated match should not be treated as a court ruling on the legal question.
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Music rights and permission
A music use may involve two distinct works: the musical composition, including music and lyrics, and the sound recording, which is a particular recorded performance. Identify the exact song and recording you plan to use, then confirm which permissions cover your intended use; do not assume one generic permission necessarily covers both. The Copyright Office’s circulars and resources are an official starting point for seeking permission or a license.
Where fair use is uncertain, permission is the clearer route. The Copyright Office notes that an owner may bring an infringement action over unauthorized use and recommends seeking permission when in doubt. For a consequential upload, sample, or campaign, consult a qualified copyright attorney rather than relying on a general explanation.
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YouTube Creator Music: a track-specific licensing option
For eligible creators and tracks, YouTube Creator Music offers options such as no-cost licenses or revenue sharing. This is a licensing route, not a finding that an unlicensed use is fair. A Creator Music license is a single-use synchronization license subject to that track’s terms, and licensed tracks are for YouTube videos rather than general reuse elsewhere (YouTube Creator Music overview).
As of October 3, 2026, YouTube says Creator Music is available to U.S. creators in the YouTube Partner Program, with expansion outside the U.S. pending. YouTube also says it began phasing out paid licenses in August 2026, focusing on no-cost and revenue-sharing tracks. Availability and permitted uses depend on the track and creator eligibility (Creator Music availability and licensing). Its usage-details page says Creator Music tracks cannot be used in Shorts or live streams (Creator Music usage details). Check the current terms for the specific track before relying on this option.
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