🤖 Claude's system prompt now hard-blocks song lyrics
Anthropic quietly updated Claude's system prompt to refuse reproducing copyrighted lyrics. Ask once, get blocked. Try a narrower reword, still blocked for the whole session.
Pre-1929 works are fine. Everything else: Claude describes or analyzes, won't quote. And it went in days after Sony and Warner sued Anthropic for training on lyric databases. Timing's not subtle.
Simon Willison’s Weblog
Claude’s new system prompt really doesn’t want to reproduce song lyrics
Anthropic publish the system prompts for their Claude consumer applications (Claude.ai and the Claude mobile apps—sadly not for Claude Cowork or Claude Code). I love that they do this, and …
September 5, 2026 898 2
