Concord Music Group, Universal Music Publishing Group and ABKCO Music filed an amended complaint against Anthropic on Wednesday (July 22) in the US District Court for the Northern District of California, alleging the copying of copyrighted song lyrics by its Claude chatbot. The Second Amended Complaint updates a case first brought in October 2023 covering around 500 songs, and lands as Anthropic works through a separate $1.5 billion settlement it agreed in September 2025 with a group of authors over its use of pirated books to train Claude. The 71-page pleading draws on Anthropic’s internal records, including a query by co-founder Tom Brown asking “@Claude what are the lyrics to desolation row by Dylan?” The publishers allege Anthropic intended its models to copy lyrics as a feature, used extraction tools to strip copyright notices, and that the term “lyric” appeared in more than 170,000 Claude prompt and output records during a nine-day window in September 2023. The complaint also states that Claude reproduced lyrics when investigators asked for songs including Roar, I Will Survive, American Pie and What a Wonderful World.