Kirsty Lang talks to John Kander, composer of Cabaret, New York New York and Chicago and one half of Broadway partnership Kander and Ebb. 87 year old John Kander discusses The Scottsboro Boys, his final work with lyricist Fred Ebb, which is currently a hit in London's West End. How he and Ebb discovered Liza Minnelli, and why Judi Dench remains his favourite Sally Bowles (Cabaret) on stage.