# Anthropic and Round Hill Music skirmish of which set of cases should be related: all music cases v. Anthropic or Round Hill Music’s cases v. Anthropic and Suno

> Source: <https://chatgptiseatingtheworld.com/2026/08/29/anthropic-and-round-hill-music-skirmish-of-which-set-of-cases-should-be-related-all-music-cases-v-anthropic-or-round-hill-musics-cases-v-anthropic-and-suno/>
> Published: 2026-08-29 21:22:49+00:00

Anthropic and Round Hill Music, which just sued Anthropic and Suno in separate lawsuits, are already skirmishing on which set of cases, if any, the courts should consider related: (1) *Round Hill Music v. Anthropic* related to the music cases before Judge Lee, *Concord Music I *and *II *and *BMG v. Anthropic*; or (2) *Round Hill Music v. Anthropic *before Judge Breyer to *Round Hill Music v. Suno* before Judge Lin.

Because *Concord Music I *is the earliest filed case, Judge Eumi Lee presumably gets to decide first whether she considers *Round Hill Music v. Anthropic* related. If she does, *Round Hill Music* would get reassigned to her from Judge Breyer.

If Judge Lee doesn’t consider *Round Hill Music v. Anthropic* related to *Concord Music*, then Judge Rita Lin would presumably decide whether *Round Hill Music v. Anthropic *is related the earlier filed *Round Hill Music v. Suno* before her.

Got that?

Of the two scenarios, it’s far more common–though not guaranteed–to treat **multiple cases against the same defendant **as related if they involve a common nucleus of facts.

By contrast, it has not been common, at least in the AI litigation, to relate **cases involving different defendants** **that did not act in concert. **For example, although technically it did not involve a formal request to relate cases, Judge Chhabria sue sponte dismissed a lawsuit filed by book authors against multiple AI companies, but he kept the part of the suit against Meta, which he related to *Kadrey* over which he presides. Presumably, had the book authors requested Judge Chhabria to relate the various cases against different AI companies, he would have rejected it.

**Anthropic Opposes Round Hill Music’s request to relate Round Hill Music v. Anthropic with Round Hill Music v. Suno**

[Anthropic Opposition to Round Hill Music’s notice to relate to Suno case gov.uscourts.cand.476356.21.0](https://chatgptiseatingtheworld.com/wp-content/uploads/2026/08/Anthropic-Opposition-to-Round-Hill-Musics-notice-to-relate-to-Suno-case-gov.uscourts.cand_.476356.21.0.pdf)

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**Round Hill Music Opposes Anthropic’s request to relate Round Hill Music v. Anthropic with the cluster of cases involving Concord Music I and II, and BMG v. Anthropic**