Music publishers and rights holders, including BMG, Concord, Sony, Warner Chappell, and Round Hill Music, have filed multiple copyright infringement lawsuits against Anthropic, alleging the company trained its AI models using unauthorized recordings and lyrics from thousands of songs. The legal actions follow a broader wave of litigation involving AI music firms, with some claims reaching up to $1 billion in damages. Meanwhile, a separate $1.5 billion settlement with authors has received court approval, highlighting the growing legal scrutiny of AI training practices in the music industry.