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What happens if you never signed a split sheet

Nothing happens, and that is the problem. The moment two people write a song together the law already assigned the splits — in the United States, equal shares to every joint author regardless of who wrote what — and any one of them can license the song without asking the others. A split sheet does not create the split. It replaces the default with what you actually agreed.

So what are the splits right now?

Equal, if you are joint authors and you never agreed otherwise. Not proportional to the work, not weighted toward whoever wrote the topline, not zero for the person who was mostly on the couch.

The statute is short about it. Section 201(a) of the US Copyright Act:

Copyright in a work protected under this title vests initially in the author or authors of the work. The authors of a joint work are coowners of copyright in the work.

And a joint work, from the definitions in section 101:

A “joint work” is a work prepared by two or more authors with the intention that their contributions be merged into inseparable or interdependent parts of a unitary whole.

The statute stops there, deliberately — the drafters left the rest to case law. What the courts filled in is that co-owners hold the copyright as tenants in common, each with an undivided interest in the whole song, and that those interests are presumed equal in the absence of an agreement saying otherwise. The contributions do not have to be equal in quality or quantity for the shares to come out equal anyway.

So the person who wrote one line of the second verse and the person who wrote everything else are, by default, 50/50. This is the fact that most co-writers discover at the worst possible moment, and it runs in both directions — it is as often the prolific writer losing half as it is the light contributor being written out.

Is equal how writers actually split it?

Often not, and the gap between the legal default and working custom is its own trap.

Nashville writing rooms run on a custom of their own: everyone in the room the day the song was written shares equally, whoever brought the hook. It happens to match the legal default, which is part of why those sheets take a minute to sign. Pop and hip-hop sessions more often negotiate by contribution — track against topline, melody against lyric — and a producer who supplied the track may expect a fixed share before any writing starts.

Custom is not law. A convention everyone in the room assumed but nobody wrote down is exactly as enforceable as any other unwritten agreement, which is what the first half of this page was about. If the session ends with nothing on paper, the statute’s equal split is what you have — and the statute has never heard of track versus topline.

Who actually counts as a co-writer?

This is the harder question, and it is the one nearly every explanation of split sheets skips.

Being in the room is not enough. Being on the record is not enough. US courts generally apply two tests, and a contributor has to pass both:

  • Intent. Everyone involved must have intended, at the time, to be joint authors. In Childress v. Taylor the Second Circuit held that the parties must have shared that intent — a contribution made without it does not create co-authorship however useful it was.
  • An independently copyrightable contribution. Ideas, direction, research and suggestions do not qualify. In Childress the contributor supplied ideas and research and was held not to be an author at all.

Which produces the two situations worth naming, because they are the ones that actually happen:

Someone believes they are a co-writer and is not. The producer who suggested changing the chord, the friend who said “what if the hook came earlier,” the engineer who fixed the arrangement. Real contributions, none of them independently copyrightable on their own.

Someone is a co-writer and nobody thought about it. The session player who improvised the line that became the hook. That is a fixed, original musical contribution, and if everyone treated it as part of the song, the intent test may well be satisfied too.

A split sheet is where this gets decided by the people who were there, while they still remember. Left undecided, it gets decided later by people who were not.

What can a co-writer do without asking you?

In the United States, more than most artists expect. Because co-owners are tenants in common, each of them may grant a non-exclusive licence to the whole song on their own — no consent, no notice, no signature from anyone else.

So a co-writer can put your song in an advertisement, license it to a film, or clear it for a sample, unilaterally. What they owe you is not a veto but an accounting: a co-owner who licenses the work has a duty to account to the others for their share of the profits. That principle traces back to Shapiro, Bernstein & Co. v. Jerry Vogel Music Co. and was reaffirmed by the Second Circuit in Davis v. Blige.

Two limits worth knowing:

  • Exclusive licences are different. A co-owner cannot grant one alone — that needs every co-owner. Which is why a sync request for an exclusive term stalls the instant one writer is unreachable.
  • The duty runs between co-owners, not to the licensee. The company that licensed the song pays the co-owner who signed. Collecting your share is a conversation with your co-writer, not with the advertiser.

Does this work the same way in Canada?

No, and the difference is large enough that being vague about it would be worse than saying nothing.

Canadian law also treats joint owners as tenants in common, but it does not carry the American rule permitting a co-owner to license unilaterally. The general position is that a licence or assignment of a jointly-owned copyright requires the consent of all the joint owners, because it affects the others’ rights.

Practically, that reverses the risk. In the US a missing split sheet means a co-writer can license without you. In Canada it means nobody can license at all until every co-owner agrees — so one unreachable collaborator can freeze a song indefinitely. Same missing document, opposite failure mode.

If your collaborators are in different countries, which of these applies is not obvious, and it is a question for a lawyer rather than a blog post.

Where does it actually break?

Rarely in court. Almost always at registration, which is quieter and far more common.

You and your co-writer each register the song, with different numbers, at organisations that have no way to know which of you is right. What follows is documented policy rather than speculation.

BMI, on a second registration that disagrees with the first:

If a later registration is received for the same work which conflicts with the earlier registration, we will notify the party submitting the later registration and request documentation or written confirmation from all affected participants in conformity with BMI’s conflicting registration rules before changing our records.

ASCAP holds disputed royalties where it concludes there is a reasonable basis for a claim, for as long as it considers appropriate, and will hold them outright when a court directs it to.

And The MLC, which handles US mechanicals, is explicit about the limit of its role:

The MLC will not resolve disputes over copyright ownership.

It has a policy of placing royalties on hold when a substantiated dispute is raised, and says plainly that the parties or the courts decide ownership, not The MLC.

So the realistic outcome of no split sheet is not a lawsuit. It is a song that earns normally and pays nobody, while an administrator waits for a document that does not exist. Money accrues; it just sits somewhere neither of you can reach.

Can you fix it after the fact?

Usually, and it gets harder every year. The fix is the same document, written now, describing what you agreed then.

  1. Write down what you believe the splits are, with the date of the session and everyone who was in it. Include the people you are unsure about; leaving someone off is the thing that turns an ambiguity into a dispute.
  2. Send it to every contributor and get each of them to confirm in writing. A signature is best. A reply that quotes the numbers and says yes is worth a great deal more than nothing, and it is what a PRO will look at.
  3. Reconcile before anyone re-registers. Registering your corrected number against a co-writer’s stale one creates the conflict you are trying to close. Agree first, then everyone files the same figures.
  4. Gather what corroborates it — session files with dates, the group chat, the DAW project, the email where someone said “yeah 40/30/30.” Contemporaneous evidence is what makes a late document credible.
  5. If someone refuses, or cannot be found, stop and get advice. That is the point where this becomes a legal matter and not an administrative one.

One thing not to do: quietly register your preferred number and hope nobody checks. That is how a conflict becomes a dispute, and a dispute is the one state that reliably stops payment.

What to do this week

  • List every song with more than one contributor. Most catalogues have fewer than people fear, and knowing the number is most of the relief.
  • Mark the ones with nothing in writing. That is the actual exposure.
  • Start with the songs that earn. Anything registered, released, or pitched for sync goes first — those are where a hold costs something.
  • Then start with the newest. Memory is evidence, and it decays.
  • Do the next session’s sheet before anyone leaves the room. Five minutes at the end of a session is the entire cost of never reading this page again.

Sources

This is not legal advice, and copyright co-ownership is one of the areas where the answer genuinely changes by country and by circuit. If real money or a real disagreement is involved, talk to a lawyer in the relevant territory.

Keeping the register

CatalogTracker keeps the splits with the recording they belong to, and generates the split sheet from them rather than asking you to fill one in twice. In development for iPhone.