Masterpiece Theatre is a popular television show that presents multipart adaptations of literary classics as well as original dramas. The programs for Masterpiece Theatre have originated primarily in the United Kingdom, with a few programs coming from Australia, Canada, and the United States. The programs are broadcast in the United States over the Public Broadcasting System (PBS) through TV station WGBH in Boston. The English author and television personality Alistair Cooke served as the urbane host of the program from its beginning to 1992, when he was replaced by the American journalist Russell Baker. Many major British actors of the middle and late 1900's have appeared on various Masterpiece Theatre series. Jean-Joseph Mouret, a French composer, wrote the theme music that plays during the opening credits, a piece often called "Rondeau" or "Fanfare," which is actually from the first of Mouret's two "Suites de symphonies" (1729).