Mike Lévy (French pronunciation: [majk levi]; born June 13, 1987), known professionally as Gesaffelstein (German pronunciation: [ɡəˈzafl̩ʃtaɪ̯n]), is a French musician, DJ, songwriter and record producer from Lyon. He has worked alongside artists as varied as The Weeknd, Daft Punk, Kanye West, A$AP Rocky, Electric Youth, Haim, Miss Kittin, The Hacker, Jean-Michel Jarre and Pharrell Williams.