AI Music Lawsuit
Winamp Group Files U.S. Lawsuit Against $5.4B AI Music Firm Suno Over Copyright Claims
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Winamp Group SA has filed a federal lawsuit against Suno, Inc. — the AI music startup valued at $5.4 billion — alleging the company used over 55,000 songs from Jamendo's catalog to train its AI without permission, Business Wire reported. The complaint, filed in the District of Massachusetts, claims copyright infringement, breach of contract, and unjust enrichment.
Winamp's CEO Alexandre Saboundjian said the case is about principle. "Innovation and respect for intellectual property must go hand in hand," he said. "Our music catalog is not free for exploitation by commercial entities building AI models without permission."
The MTG-Jamendo Dataset at the Heart of the Case
In 2019, Jamendo teamed up with the Music Technology Group at Universitat Pompeu Fabra in Barcelona. Together, they released the MTG-Jamendo Dataset on GitHub — a collection of tracks and metadata meant strictly for non-commercial academic research, according to The AI Musicpreneur. The license was a Creative Commons BY-NC-SA, meaning commercial use was explicitly banned.
Winamp's legal argument rests on this specific contract. By allegedly ingesting those 55,000 tracks into a commercial product, Suno is accused of violating the "Non-Commercial" clause. Legal experts say this gives Winamp a clearer case than most AI copyright suits, because Suno's own technical papers reportedly cited the dataset as proof their model worked well.
Suno Raised $400 Million Days Before the Suit Dropped
On June 3, 2026 — just weeks before the filing — Suno closed a $400 million Series D round led by Bond Capital, pushing its valuation to $5.4 billion, Business Wire reported. The raise came even as separate lawsuits from the RIAA and independent artists were already active in U.S. courts. Investors appear to believe Suno will either win on Fair Use grounds or settle cheaply.
Suno has defended its training methods by comparing them to a "kid learning to write new rock songs by listening religiously to rock music." The company argues this process qualifies as Fair Use under U.S. copyright law. Winamp's Chief Business Officer Thierry Ascarez pushed back hard: "Other companies have paid for licenses, so we demand that the same rules apply to everyone."
Suno Already Faces a Wave of Music Industry Lawsuits
This filing is not Winamp's first legal move. On June 22, 2026, Jamendo sued NVIDIA separately in the Northern District of California over the same 55,000 tracks, seeking at least €17.8 million ($20.3 million) based on its standard AI training licensing rates, according to Yahoo Finance. The Massachusetts suit against Suno adds a second legal front.
The broader music industry is split on strategy. Warner Music Group settled with Suno in November 2025 and moved toward a licensing deal. Universal Music Group settled with Udio but stayed in court against Suno. Sony Music and independent players like Jamendo are pushing for a full court win — one that would force AI companies to pay to train on copyrighted music at all.
A Win Could Reshape How AI Companies Use Open Datasets
The stakes go far beyond Suno. If Jamendo wins, courts could rule that "research-only" datasets cannot legally be used to build commercial AI products. That would force companies to pay retroactive licensing fees for using datasets like LAION-5B and Common Crawl — the backbone of dozens of major AI tools. Under U.S. copyright law, willful infringement carries up to $150,000 per track in damages.
Academics are also worried. There is growing fear that platforms will stop sharing research data entirely if companies can "launder" it into commercial products. The next key step is discovery — if a court orders Suno to hand over its training logs and those logs show direct use of MTG-Jamendo files, Suno's Fair Use defense becomes its only shield.
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