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Sony Music Sues Udio Again, Asserting over 30,000 Recordings a Judge Barred the Major From Adding to Its Original Case

Sony says discovery showed Udio allegedly copied more than 30,000 recordings, raising potential damages to $4.5 billion after a judge blocked an amendment.

  • On Monday, Sony Music Entertainment filed a new copyright infringement lawsuit against Udio, asserting more than 30,000 recordings were copied without permission to train the AI music generator's models.
  • U.S. District Court Judge Alvin K. Hellerstein rejected Sony's request to add these works to an existing 2024 case last month, writing that doing so would substantially prejudice defendants and unduly delay the resolution of this action.
  • Alleging the company obtained audio by "stream ripping" from YouTube using the tool YT-DLP, Sony claims this ingestion balloons Udio's potential damages exposure from $50 million to $4.5 billion.
  • Licensing deals Udio signed with Universal Music Group and Warner Music Group prove a functioning market exists for AI training, according to Sony, undermining the company's fair use defense.
  • Whether training AI models on copyrighted works constitutes fair use remains an untested legal question, as Sony continues pursuing parallel infringement claims against rival AI music generator Suno in Massachusetts.
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Sony estimates that the operation of the Udio service may have caused the company up to $4.5 billion in damages.

·Helsinki, Finland
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ReportWire broke the news on Monday, July 20, 2026.
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