Andrew Lloyd Webber (b. 1948) is the most successful composer of musicals of his generation and also a breaker of molds for the type. His predecessors were for the most part American: New York-based songwriters steeped in Broadway tradition. Lloyd Webber saw his share of shows as a child, too, but he was born in London, the son of William Lloyd Webber, Director of the London College of Music, and was trained at the Royal Academy of Music, hardly the sort of place where you'd be likely to hear Oklahoma!
Nevertheless, Lloyd Webber hooked up with lyricist Tim Rice, and the two began work on what would be a typical project for them, a musical based on the Biblical story of Joseph and his coat of many colors. Titled Joseph and the Amazing Technicolor Dreamcoat, it brought in a strong rock & roll influence.