Some would argue that we never again got as good as disco. Its advent in the 1970s—a streamlined mix of the Black American genres gospel, soul, and funk—marked the beginning of the glittering nightlife culture we hold in popular imagination. In New York, there was Studio 54; in Berlin, Xanadu; in Chicago, the Warehouse. Exuberant dance music was paired with flamboyant fashion: sequined dresses, metallic jumpsuits, high-waisted flares, platform shoes, all in vibrant colors. And then there were those legends of the mirror ball—glamorous and irresistible—Donna Summer, Diana Ross, Grace Jones, the French drummer Cerrone, and so on. As disco turns 50, the Philharmonie de Paris celebrates with an exhibition that features photographs, instruments, costumes, and other ephemera. Dimitri from Paris, a French music producer and D.J., has created an accompanying disco soundtrack. —Elena Clavarino