text:  The music industry says focus on the music that was copied, the input. And the AI companies say focus on the new thing the tools are spitting out, the output. It's not a clear-cut case. That's Richard Bush. He's a big deal in the copyright world. He's a lawyer who won a multi-million dollar case against Robin Thicke and Pharrell Williams over their 2013 song Blurred Lines for illegally copying Marvin Gaye. He's devoted his life to going after artists who have ripped others off. But he thinks the AI companies here might actually have an argument.