Music Copyright: Composition vs. Master and What Songwriters Need to Know

Every recorded song creates two separate copyrights. Understanding which one you own — and how to prove it — is the foundation of getting paid as a songwriter. This isn't law school theory. It's the practical knowledge that determines whether you collect royalties or watch someone else collect them.

Two copyrights, one song

When a song gets recorded, two distinct copyrights come into existence:

The composition copyright — the underlying song itself: melody, lyrics, chord progression, arrangement. This belongs to the songwriter(s). It exists whether or not the song is ever recorded.
The master recording copyright — the specific recorded version of the song: the audio file, the performance, the production, the mix. This typically belongs to the recording artist, the label, or whoever paid for the recording session.

Same song, two copyrights, often owned by different people. A songwriter who isn't the recording artist owns the composition but not the master. A label that signs an artist usually owns the master but not the composition. These two copyrights generate different royalty streams and are administered by different organizations.

How copyright is created — fixation, not registration

Under US copyright law, your copyright exists the moment a work is “fixed in a tangible medium of expression.” In plain language: the moment you record it, write it down, or save it to a file. You don't need to register it. You don't need to mail yourself a copy (that's the “poor man's copyright” myth — it has no legal standing). You don't need a © symbol.

A voice memo on your phone, a rough demo in your DAW, lyrics typed in your notes app — all of these create a copyright the moment they're saved. The song exists as a copyrighted work from that instant.

So why does registration matter?

Why you should still register your copyright

Registration with the US Copyright Office isn't required to own a copyright, but it unlocks critical legal protections:

You can sue for infringement.In the US, you cannot file a copyright infringement lawsuit until the work is registered. Your copyright exists without registration, but you can't enforce it in court.
Statutory damages and attorney's fees.If you register before the infringement occurs (or within 3 months of publication), you can claim statutory damages up to $150,000 per work — without having to prove actual financial loss. Without timely registration, you're limited to actual damages, which are much harder to calculate and prove.
Public record of ownership.Registration creates an official record of who wrote what and when. In disputes over authorship — which happen more often than you'd think — a registration certificate is strong evidence.

Registration costs $65 for a single work through the Copyright Office's online portal (eCO). For a song that might generate royalties for decades, it's a no-brainer investment.

Work-for-hire and who actually owns the song

Normally, the person who creates a work owns the copyright. But there's an exception: work made for hire. Under a work-for-hire agreement, the person or company who commissioned the work is considered the legal author — they own the copyright from the start. The actual creator has no ownership rights.

In music, work-for-hire comes up in specific situations:

Jingles and commercial music written for an advertising agency
Theme songs commissioned for a TV show or film
Ghost-writing arrangements where the writer is paid a flat fee and gives up all rights
Music created by an employee within the scope of their employment (e.g., a staff composer at a production music library)

The critical thing to know: work-for-hire must be agreed to in writing before or at the time the work is created. Someone can't retroactively claim work-for-hire after you've already written the song. If anyone presents you with an agreement that includes “work made for hire” language, understand that you're giving up ownership entirely — no future royalties, no reversion, no residual rights.

Co-ownership: what happens when multiple people write a song

When two or more people collaborate on a song with the intention of creating a joint work, they become co-owners of the copyright. Under default copyright law (without any written agreement), each co-owner has equal ownership regardless of who contributed more, and each co-owner can license the work non-exclusively without the others' permission — they just have to account for profits.

That default is almost never what anyone wants. If you wrote 80% of the song and your co-writer contributed a bridge, you probably don't want the law treating you as 50/50 owners. And you probably don't want your co-writer licensing the song to a commercial without asking you.

This is exactly what a split sheet overrides. A signed split sheet documents the actual agreed-upon ownership percentages and replaces the default 50/50 assumption. It's a written agreement between co-owners that defines who owns what — which is exactly what PROs, publishers, and the Copyright Office want to see.

How copyright connects to your split sheet

Your split sheet is, at its core, a copyright ownership document. When you sign a split sheet saying you own 40% of the composition, you're documenting your 40% share of the composition copyright. That percentage determines:

Your share of mechanical royalties (collected through the MLC)
Your share of performance royalties (collected through your PRO)
Your share of sync licensing fees
Your voting weight on licensing decisions
The ownership percentage you report on your copyright registration

Every downstream royalty payment, every registration form, every licensing negotiation traces back to this number. Get it right at the beginning — when everyone is in the room and the memory of who wrote what is still fresh — and the rest of the business side handles itself.

Don't have a split sheet yet? Create one now. It takes less than a minute, and it protects the copyright you already own.