Fair Use Versus Mechanical Royalty Rates: When Does Reuse Owe You Nothing?

Nine-point-one cents. That was the statutory mechanical rate for a physical copy or a permanent download in the United States, frozen at that figure from 2006 until the Phonorecords III proceedings finally moved it. Sixteen years, one number. If you analyze catalog income for a living, mechanical royalty rates are the floor you build every model on: the compulsory license under Section 115 means a songwriter cannot say no to a cover, only collect the set rate. But that floor has a trapdoor, and it is worth knowing exactly where it sits.

The question I keep hearing from publishers and songwriters is not really about the rate at all. It is this: when someone reuses my work, when does fair use let them owe me nothing? Because if the answer is "more often than it used to," then the whole apparatus of statutory rates, from the penny rate to the streaming percentage-of-revenue formula, describes only the reuses that clear the fair use bar first.

What fair use actually decides before a rate ever applies

Here is the part that trips up otherwise careful people. A compulsory mechanical license and a fair use defense are not two prices for the same thing. They answer different questions in sequence. Fair use asks whether the use infringes at all. Only if the answer is yes — this is infringement absent a license — does anyone reach for the rate card. Fair use, when it wins, means no license was ever required, statutory or negotiated. Zero, not 9.1 cents.

So the honest framing is: fair use does not lower what you are owed. It decides whether you are owed anything. That distinction matters enormously to a royalty analyst, because a use that qualifies as fair never shows up in a Section 115 account. It is invisible to the rate structure entirely.

The four factors, read the way a music case reads them

Courts weigh four statutory factors, and in music they tend to behave in specific ways.

• Purpose and character of the use. The heavy factor since Campbell v. Acuff-Rose, the 2 Live Crew "Pretty Woman" case, which held that a commercial parody can still be fair. The word doing the work is transformative — does the new use add a different meaning or message, or does it substitute for the original. Commercial intent counts against, but it is not fatal.
• Nature of the copyrighted work. Creative works like songs sit close to the core of what copyright protects, which tilts against fair use compared to, say, factual reporting.
• Amount and substantiality. Not only how many bars, but whether you took the "heart" of the work. A four-second horn stab can be substantial if it is the hook.
• Effect on the market. Whether the use usurps demand for the original or its licensing market. This is the factor that speaks most directly to your income, and courts have grown more attentive to it.

No factor is dispositive. That is not a hedge; it is the doctrine. Two judges can weigh the same four factors and split.

Where the answer is genuinely "it depends"

Sampling. After Bridgeport Music v. Dimension Films, the working assumption in the recording world became "get a license, get a lawyer." But Bridgeport was about the master recording, not the composition, and the Ninth Circuit's later VMG Salsoul v. Ciccone decision recognized a de minimis defense for a very short sample. Two circuits, two instincts. If your catalog gets sampled, the circuit you are in still shapes the answer.

Interpolation. Re-recording a melody rather than lifting the master routes you back to the composition — and to mechanical royalties, negotiated up front rather than paid at the statutory rate, because interpolations are not compulsory. Fair use rarely rescues an interpolation that reproduces a recognizable hook; the market-harm factor cuts hard.

Parody versus satire. Campbell protects parody, which targets the original. Satire, which borrows a song to comment on something else, gets far less shelter because the borrowing is not necessary to the joke. The line is real and it is thin, and it decides cases.

The fight that is quietly reframing the whole question

The reuse that should be on every catalog analyst's dashboard is not a cover or a sample. It is training. When a generative model ingests a corpus of recordings and compositions to learn how to produce new audio, the defendants argue that the copying is transformative — the model does not store or reproduce your song, it derives statistical patterns from it. Rights holders argue the opposite: that the training copies are unlicensed reproductions and that the outputs compete directly in the market fair use is supposed to protect.

As of this writing, that dispute is unsettled, and it is being litigated in music, text, and images at once. The through-line is the same fourth factor — market harm — now asked about a market that barely existed when the penny rate was last frozen. If courts treat training as fair use, an enormous volume of reuse of your catalog generates no mechanical royalty rates at all, because no license attaches. If they don't, a licensing market forms, and the negotiation over what that costs becomes the successor to the Phonorecords fights, not a footnote to them.

Notice what is not in dispute: an AI output that reproduces a recognizable melody is a straightforward composition question, mechanicals and all. The genuinely open ground is the training step upstream, where no note is heard and the whole case turns on how a judge reads "transformative."

A short checklist before you assume a rate applies

• Is the reuse of the composition, the master, or both? Fair use and the rate structure treat them differently.
• Is there a compulsory path (a straight cover) or must it be negotiated (an interpolation, a sample)?
• Which circuit governs, if a sample is involved?
• Does the use target your work (parody) or merely borrow it (satire)?
• Is the alleged use a reproduction or an upstream training copy — the one live question with no settled answer?

Back to the number

Nine-point-one cents looked like the whole story when it sat frozen for sixteen years — the fixed price of reusing a song. It was never that. It was always the price of the reuses that fair use had already declined to excuse. The statutory rate is a floor, and a floor only holds up what has already landed on it. The fights worth watching now are not over where the floor sits. They are over how much of your catalog's reuse touches the floor at all — and a model trained quietly on a decade of your work may never come near it.