Press generate on a chord tool, watch four bars of voicings land in your piano roll, and you have produced something copyright law treats with near total indifference, because a progression on its own sits among the shared building blocks of music, and the software that arranged it is not a person, which leaves you holding a MIDI clip nobody can steal from you and nobody can be stopped from copying either.
The volume of output makes this pressing. Budget chord generators that mutate progressions on demand throw out dozens of usable ideas in an evening, so producers now build whole records on material they never consciously wrote. The legal position underneath that habit is clearer than most people assume.
Two separate questions get tangled together constantly. One asks whether a chord sequence is protectable at all. The other asks whether machine output can have an author, and courts and copyright offices answer them in different places.
The panel went further and warned against handing anyone a monopoly over a combination of two fundamental musical building blocks. Lock those up, and you smother the writing the law exists to encourage.
The Ninth Circuit landed nearby in 2022, when it found the repeating ostinato at the centre of the Dark Horse dispute was not original expression. Commonplace material stays commonplace, however famous the record built on top of it.
So your generated ii-V-I is safe to use, and equally impossible to fence off. Nobody is coming for it, and nobody needs your permission to write the same thing next week.
The report drew a distinction it called important, between using these tools to assist creation and using them as a stand-in for human creativity. Assistance keeps you inside authorship territory. Substitution pushes you out of it.
Two routes stay open. Human material that remains clearly perceptible in the output is protectable, and so is your original selection, coordination, and arrangement of generated content, which is how the Zarya of the Dawn comic came to be registered.
The ownership of machine-made chord progressions therefore rests on what you did next. Revoicing, reharmonising, shifting the rhythm, performing the part, and building an arrangement around it are the contributions that carry your claim.
That provision now sits on the chopping block. A UK Government report published on 18 March 2026 proposed removing it, stating that "in the absence of evidence of its ongoing value, we propose that this specific type of protection should be removed".
The same report confirmed that copyright should carry on protecting works created with AI assistance, and it dropped the earlier plan for a broad text and data mining exception with an opt-out. On most other questions it chose to wait and watch.
Keep your project files. A generated clip is worth almost nothing standing alone, and the version you bent out of shape, revoiced, and actually performed is the part carrying your name.
The volume of output makes this pressing. Budget chord generators that mutate progressions on demand throw out dozens of usable ideas in an evening, so producers now build whole records on material they never consciously wrote. The legal position underneath that habit is clearer than most people assume.
Two separate questions get tangled together constantly. One asks whether a chord sequence is protectable at all. The other asks whether machine output can have an author, and courts and copyright offices answer them in different places.
Courts keep ruling that common progressions stay free
The Second Circuit closed a long-running fight on 1 November 2024. It held that a four-chord progression "ubiquitous in pop music", even paired with a syncopated harmonic rhythm, is "too well-explored to meet the originality threshold that copyright law demands". Ed Sheeran kept his song.The panel went further and warned against handing anyone a monopoly over a combination of two fundamental musical building blocks. Lock those up, and you smother the writing the law exists to encourage.
The Ninth Circuit landed nearby in 2022, when it found the repeating ostinato at the centre of the Dark Horse dispute was not original expression. Commonplace material stays commonplace, however famous the record built on top of it.
So your generated ii-V-I is safe to use, and equally impossible to fence off. Nobody is coming for it, and nobody needs your permission to write the same thing next week.
The Copyright Office draws its line at human expression
The United States Copyright Office published the second part of its artificial intelligence report on 29 January 2025. It concluded that "prompting alone does not qualify as sufficient human authorship", since a user cannot control how the system expresses the idea.The report drew a distinction it called important, between using these tools to assist creation and using them as a stand-in for human creativity. Assistance keeps you inside authorship territory. Substitution pushes you out of it.
Two routes stay open. Human material that remains clearly perceptible in the output is protectable, and so is your original selection, coordination, and arrangement of generated content, which is how the Zarya of the Dawn comic came to be registered.
The ownership of machine-made chord progressions therefore rests on what you did next. Revoicing, reharmonising, shifting the rhythm, performing the part, and building an arrangement around it are the contributions that carry your claim.
Britain plans to bin its computer-generated works rule
British law picked a different route decades ago. Section 9(3) of the Copyright, Designs and Patents Act 1988 names the person who made the arrangements for a computer-generated work as its author, which sounds tailor-made for generative plugins.That provision now sits on the chopping block. A UK Government report published on 18 March 2026 proposed removing it, stating that "in the absence of evidence of its ongoing value, we propose that this specific type of protection should be removed".
The same report confirmed that copyright should carry on protecting works created with AI assistance, and it dropped the earlier plan for a broad text and data mining exception with an opt-out. On most other questions it chose to wait and watch.
Keep your project files. A generated clip is worth almost nothing standing alone, and the version you bent out of shape, revoiced, and actually performed is the part carrying your name.
