Frederic Anthony Rzewski (/ˈʒɛfski/ ZHEF-skee; April 13, 1938 – June 26, 2021) was an American composer and pianist who is considered to be one of the most important American composer-pianists of his time. His major compositions, which often incorporate social and political themes, include the minimalist Coming Together and the variation set The People United Will Never Be Defeated!, which has been called "a modern classic".