Music publishers are now suing Anthropic, arguing that the company's $1.5 billion settlement with authors for pirating 7 million books doesn't go far enough. Sony, EMI, and Warner Chappell claim Anthropic also illegally torrented thousands of their copyrighted musical compositions to train Claude. They're pointing out the absurdity of the penalty: Anthropic's valuation hit $2 trillion while paying out $1.5 billion—a number the publishers say won't deter future infringement. The lawsuit alleges that without an injunction, Anthropic will keep using these pirated works indefinitely to train its AI. The publishers describe a deliberate, large-scale operation. Benjamin Mann, Anthropic's co-founder, personally used BitTorrent in July 2021 to download millions of pirated books from Library Genesis. Dario Amodei, the company's CEO and another co-founder, allegedly approved this torrenting campaign. The pirated material included complete Beatles works, Taylor Swift's best songs, and compilations like "VH1's 100 Greatest Songs of Rock & Roll." Anthropic apparently plans to keep this material permanently in its training datasets. The real harm, according to the lawsuit, is that Claude can now generate music that mimics artists' styles and reproduces lyrics verbatim. Songwriters are already competing with AI-generated tracks on music charts. The publishers argue that Anthropic is essentially substituting AI-generated content for legitimate artist work—Claude could rewrite Eminem lyrics in Beyoncé's style, for instance. The lawsuit frames this as a calculated business strategy: steal copyrighted works at massive scale, train a valuable AI system, pocket enormous profits, and accept settlements as a cost of doing business.