Anthropic and Suno both fight Round Hill's move to tie their two lawsuits together
Round Hill Music sued Suno and Anthropic on the same day, and now it wants one judge handling both. Suno and Anthropic each filed oppositions this week, Digital Music News reported after reading the filings.
The publisher moved to relate the cases, not consolidate them. Relating puts two lawsuits in front of the same judge while each keeps its own docket and schedule. Consolidation would merge them into one action.
Why Anthropic says the Suno and Anthropic cases do not belong together
Anthropic’s objection is that the two complaints have almost nothing in common except who filed them.
The two cases involve different defendants, different AI technologies, different alleged infringing conduct, different property, and different types of copyrights.
The company pressed the point on the copyrights themselves. Round Hill’s Suno complaint covers sound recordings, the actual audio files. Its Anthropic complaint covers musical compositions only, meaning the underlying songwriting rather than any particular recording of it.
“The only common ground between these cases is that the same music company plaintiffs filed both suits on the same day,” Anthropic wrote. “But that is not enough.”
Suno filed its own opposition separately.
Anthropic wants the Round Hill case grouped with Concord and BMG
The same day it argued against relation, Anthropic filed to pull the Round Hill complaint into a different group: the publisher litigation it is already defending.
“Like the Concord/BMG Actions, the Round Hill Action is a copyright case alleging that Anthropic’s Claude AI models allegedly use the text of a music publisher’s song lyrics in training data and purportedly reproduce lyrics in outputs,” the company wrote. “The claims in the Round Hill Action are virtually identical to those in the Concord/BMG Actions.”
That pile is already substantial. The music publishers’ first and second suits against Anthropic sit related alongside BMG’s separate complaint from March 2026. In April, the judge over all three entered a 90-day stay to coordinate them. The oldest has been running since 2023.
What the relation fight decides for Round Hill
Round Hill’s two complaints landed on August 17 with an unusual ask: impoundment of the trained model weights, not just the training files. Round Hill has said it intends to go to trial rather than settle.
Which judge hears what shapes how that argument gets tested. A single judge across both cases would see the scraping, the datasets and the model retention as one pattern. Split across two courtrooms, each defendant argues its own facts, and Anthropic’s point about recordings versus compositions does real work.
None of Round Hill’s allegations has been tested in court, and no ruling on the motion to relate is public.
Suno is staffing up for the legal workload
Suno has been hiring against the caseload. The company recently brought in a former TikTok executive as its legal operations lead, and last week added an ex-LegalZoom head of talent acquisition in the same role.
Suno has said it wants to build “the AI tools that will define how legal teams operate in the next decade.” It is currently defending the Sony and Universal case in Massachusetts, Tony Justice’s class action, and the GEMA case in Germany, on top of Round Hill’s.
Frequently asked questions
What does it mean to relate the Round Hill cases against Suno and Anthropic?
Relating two cases assigns them to the same judge so one court handles overlapping questions, without merging them into a single action the way consolidation does. Each case keeps its own docket, parties and schedule. Round Hill filed the motion after bringing both complaints on August 17, 2026.
Why does Anthropic oppose relating the Round Hill Suno case to its own?
Anthropic told the court the suits involve different defendants, different AI technologies, different alleged conduct and different types of copyrights. It said the Suno complaint covers sound recordings while the case against Anthropic covers only musical compositions, and that a shared plaintiff and filing date are not enough to justify relation.
What is Anthropic asking the court to do with the Round Hill complaint instead?
Anthropic filed to add the Round Hill complaint to the group of related music publisher litigation it already faces. It wrote that the Round Hill action is virtually identical to the Concord and BMG actions, since all of them allege Claude trained on song lyrics and reproduces lyrics in its outputs.
Which Anthropic music lawsuits are already related before one judge?
The music publishers' first and second suits against Anthropic are related alongside BMG's separate complaint, filed in March 2026. The judge presiding over all three entered a 90-day stay in April 2026 to coordinate the actions, the oldest of which dates to 2023.
About the author
Covering AI music tools, industry shifts, and news for music creators and professionals. Twice-weekly newsletter at aimusicpreneur.com.
