Jacki talks about the career of composer Sir Michael Tippett. He died yesterday at the age of 93. Tippett was considered one of Britain's most important musical figures, as a composer of opera, choral and orchestral music, as well as chamber and piano music. His music incorporated influences as diverse as English madrigals, Beethoven, jazz, and spirituals. He was knighted in 1966. His music was notoriously difficult to play, but earned him a reputation as an innovator and experimenter with music.