Gruen credits Ike Turner with starting his career. He first saw Ike &amp; Tina Turner perform at Madison Square Garden during the Rolling Stones' American tour in 1969. In 1970, Gruen took photographs of them performing at the Honka Monka nightclub in Queens. He showed Turner the photographs and was invited to photograph them in California. "Ike introduced me to the publicist for their record company who took me to parties and introduced me to more people in the music business," he said. Gruen developed a friendship with the Turners and shot the cover of their 1971 album "'Nuff Said". In 2012, Gruen released , a documentary he and his then-wife Nadya filmed of the Turners at their home and on tour.