Sony Escalates Copyright Fight With Udio Over 30,000 Songs in AI Music Lawsuit

Updated July 21, 2026 1:54 am

Sony Music Entertainment has opened a new front in its copyright battle with AI music generator Udio, accusing the company of infringing more than 30,000 recordings spanning artists from Elvis Presley and Britney Spears to Beyoncé and Harry Styles. The new lawsuit, filed Monday in New York, deepens the legal threat facing one of the best-known generative music startups and signals that major labels are moving beyond a handful of sample works to challenge AI training at industrial scale.

The dispute matters because it could help shape how courts treat large-scale AI model training on copyrighted music, how much protection rights holders can claim over their catalogs, and whether AI music companies can continue operating while broader licensing deals are negotiated across the industry.

What Sony is alleging

Sony says Udio did not merely draw inspiration from copyrighted music but copied and ingested recordings into its systems without permission. In the company’s telling, the alleged infringement goes far beyond the 333 songs that were originally at the center of the earlier case. Sony now says the expanded list reflects only a fraction of the material it believes Udio used.

According to the filing, Sony identified many of the additional tracks after gaining access to Udio’s training data during discovery. The label says it used audio fingerprinting to match songs and build a broader picture of what may have been fed into the model.

Sony argues that the newly listed songs represent just a small sample of the works it believes Udio copied and used in training its generative AI systems.

How did the dispute expand to 30,000 songs?

The answer is that Sony says it found the material after reviewing evidence obtained in the earlier lawsuit. The company had previously sought permission to expand the case to include more than 30,000 songs, but a judge rejected that request, keeping the original claims limited to 333 works.

Rather than wait for that dispute to resolve, Sony has now brought the expanded catalogue into a fresh filing. That move gives the label a broader platform to press its claims and potentially seek far larger damages if it succeeds.

Why audio fingerprinting matters

Audio fingerprinting is a technical method that helps identify recordings by comparing distinctive sound patterns. In this case, Sony says the technique helped it trace additional songs that may have been absorbed into Udio’s training pipeline. The company’s argument is important because it suggests the alleged infringement is not based on a few isolated examples but on systematic use of a vast music library.

For rights holders, that distinction is critical. A small number of disputed tracks can be treated as a narrow copyright disagreement. Tens of thousands of songs, by contrast, point to a potentially massive commercial practice that could force the industry to confront how AI models are built in the first place.

What songs are in the lawsuit?

The filing includes recordings by a wide range of major artists, from classic rock and soul to contemporary pop. Among the artists and songs named are Elvis Presley’s Hound Dog, Beyoncé’s Say My Name, Britney Spears, Johnny Cash and Harry Styles’ As It Was.

Sony says the list is not exhaustive. It characterizes the filing as a partial window into what it believes Udio copied, rather than a final accounting of all affected recordings.

Why Sony is taking a new legal path

Sony’s revised lawsuit appears designed to do what the earlier case could not: put the full scale of its allegations before the court. By filing a separate complaint instead of relying on the narrower original action, the company can argue that the allegedly infringing conduct is broader, more damaging and more systematic than previously recognized.

The legal strategy may also reflect a changing landscape in the music business. Some major labels have begun to explore licensing relationships with AI companies rather than only fighting them in court. But Sony has chosen a more aggressive route here, likely in part because the company believes its catalog was used without authorization and at scale.

What Sony wants from the court

Sony is asking the court to bar Udio from continuing the alleged infringement and to award damages that could reach $150,000 per work. If the court accepted that figure across the full list of songs, the theoretical exposure would be enormous, although actual awards in copyright cases often depend on the facts proved at trial and on how the court interprets the claims.

The company is also seeking a ruling that would stop Udio from using Sony-owned material in ways that violate copyright law going forward. That injunctive relief could prove as significant as any monetary award because it might shape the startup’s product roadmap and training practices.

Why this case matters for AI music

This lawsuit arrives at a sensitive moment for the AI music sector. Generative tools have flooded social media and streaming platforms with synthetic songs, remixes and style mimicry, prompting questions about originality, compensation and consent. The industry is still trying to define the line between lawful AI training and unauthorized copying.

Udio sits near the center of that debate. The startup has become one of the most visible names in AI-generated music, and the legal pressure on it could influence how other developers source data, structure product features and negotiate with rights holders.

The case also follows a broader pattern across the AI economy: content owners first accuse model builders of ingesting protected works without permission, then use litigation to demand transparency about training data. Once the contents of those datasets are revealed, the scale of the dispute often becomes much larger than the initial complaint suggested.

How the music industry is changing its approach

The music industry is no longer responding to AI with a single strategy. Some companies are suing, some are negotiating and others are pursuing both paths at once. That split reflects a practical reality: AI music tools are already here, and labels are deciding whether to block, license or shape them.

Universal Music Group and Warner Music Group have already settled their disputes with Udio and are now partnering with the company, a sign that some parts of the industry are willing to treat AI developers as collaborators rather than only as defendants. Sony’s new lawsuit suggests the company is not yet ready to follow that path.

This divergence could eventually produce a two-track market. On one side, AI music platforms may try to secure permissions and offer licensed tools. On the other, firms that rely on broad web-scale training without clear rights may face increasingly aggressive challenges from major catalog owners.

What the earlier case revealed

The original lawsuit brought by Sony, Universal and Warner against Udio and Suno in 2024 became one of the earliest major tests of how copyright law applies to generative music models. Sony’s latest move indicates that discovery in that case may have uncovered evidence the company believes strengthens its position substantially.

In particular, Sony says Udio admitted its models were built using a large and varied collection of sound recordings, including material from YouTube. That allegation is significant because it points to a training approach that may have depended on mass ingestion of copyrighted material rather than carefully curated or licensed datasets.

What happens next?

The new lawsuit could proceed alongside the earlier litigation, adding pressure on Udio as it defends itself on multiple fronts. The court will likely have to address questions about training data, model development, the extent of any copying, and whether the alleged infringement is excused by any legal defense.

Several outcomes are possible:

• The court could allow the broader Sony claims to move forward.
• The parties could settle, as others in the industry have done.
• Udio could be ordered to change how it trains or operates its service.
• A ruling could help define how copyright applies to AI music models more broadly.

For now, the new case increases the stakes. Sony is not just challenging a handful of songs; it is alleging a wholesale use of its catalog that could redefine the commercial and legal future of generative music.

Timeline of the Sony-Udio dispute

As the case moves forward, the central question will be whether Udio’s training methods crossed the line from data use into copyright violation. The answer could reverberate far beyond one startup, affecting the next wave of AI-generated songs, licensing deals and lawsuits across the entertainment industry.