The world’s biggest record labels are suing two artificial intelligence startups, taking an aggressive stance to protect their intellectual property against technology that makes it easy for people to generate music based on existing songs.

The Recording Industry Association of America said it filed twin lawsuits Monday against Suno AI and Uncharted Labs Inc., the developer of Udio AI, on behalf of Universal Music Group NV, Warner Music Group Corp. and Sony Music Entertainment. The complaints allege the companies are unlawfully training their AI models on massive amounts of copyrighted sound recordings.

The RIAA, a trade group for record labels, is seeking damages of as much as $150,000 “per work infringed.” That could amount to potentially billions of dollars.