Łukasz Sebastian Gottwald, known professionally as Dr. Luke, Tyson Trax, and Made in China, is an American musician, songwriter, and record producer. He began his professional music career as the Saturday Night Live Band's lead guitarist in 1996. In 2004 he produced Kelly Clarkson's single "Since U Been Gone" with Swedish record producer Max Martin, and later collaborated with Canadian producer Cirkut and fellow American producer Benny Blanco.