Andrew Lloyd Webber is a prolific British composer and impresario of musical theatre. He is best known for his musicals 'Evita' and 'CATS'. 'Evita' is a musical based on the life of Argentine political leader Eva Perón, and it was first performed in London's West End in 1978. 'CATS' is a musical composed of T. S. Eliot's Old Possum's Book of Practical CATS and other poems, and it opened in London's West End in 1981. Both musicals have been adapted into films and have been performed around the world.