# Sony and Universal demand Suno investor Lightspeed testify on AI training data risks

> Sony and Universal want Lightspeed to reveal how Suno's AI training data risks could harm copyright claims.
- Title: Sony and Universal demand Suno investor Lightspeed testify on…
- Summary: Sony and Universal want Lightspeed to reveal how Suno's AI training data risks could harm copyright claims. Sony and Universal seek court order forcing…
- Keywords: sony, universal music group, lightspeed venture partners, suno, series b, series c, series d, copyright infringement, training data, ai music, board of directors, investor testimony
- Source: Music Business Worldwide — https://musicbusinessworldwide.com/sony-and-universal-ask-court-to-force-suno-investor-lightspeed-to-testify-about-the-legal-risk-of-training-data
- Published: 2026-10-19T10:37:19+00:00
- Read time: 1 min
- Topics: sony, universal music group, lightspeed venture partners, suno, series b, series c, series d, copyright infringement, training data, ai music, board of directors, investor testimony
## Labels seek investor testimony
Universal Music Group and Sony Music Entertainment want Lightspeed Venture Partners to hand over documents and testify about AI music company Suno's legal risks.
## Subpoena targets training data risks
The labels want Lightspeed to answer questions on the legal risk of training data and label lawsuits related to Suno's AI model.
## Lightspeed's Series D investment
Lightspeed led Suno's USD $125 million Series B round in May 2024 and holds a seat on Suno's Board of Directors.
## Suno's Series D valuation
Suno's Series D raised over $400 million at a $5.4 billion valuation in June 2026.
## Investor production timeline
Lightspeed produced 152 documents in October 2025 but only ran up to June 6, 2025, missing Series C and Series D rounds.
## Labels' legal argument
Universal and Sony argue that Lightspeed's files are relevant to Suno's fair use defense and whether infringement was willful.
## Investor testimony relevance
Magistrate Judge Paul G. Levenson said investors in Suno are relevant to understanding its market behavior and data sources.
## Suno's YouTube data use
Suno admitted it obtained audio from YouTube for training data using a tool called YT-DLP in September 2025.
## Court timeline
The labels filed their motion on October 13, 2026, after Lightspeed refused to comply with the subpoena.
## Next steps
The labels want Lightspeed to produce documents within seven days and sit for a deposition within 14 days.
## Key takeaway

Sony and Universal seek court order forcing Lightspeed to testify about Suno's AI training data legal risks.