What does a lawyer listen to before he gets in a legal fight with the president of the United States? If you ask Hogan Lovells partner and former acting Solicitor General Neal Katyal, it’s a mix of U2, Daft Punk and the Flaming Lips.

“Lin Miranda actually came to watch me argue it,” Katyal said of his prep for Trump v. Hawaii, a fight over the former president’s ban on immigrants from mostly Muslim countries.