In the final programme of Radio 2's season of documentaries celebrating the art of the musical, actor Ramin Karimloo - who plays The Phantom in 'Love Never Dies' - assesses the present health of Broadway and London's West End. 'Back To The Future' considers the impact of TV talent shows like 'I'd Do Anything' and 'How Do You Solve A Problem Like Maria' on the musical and also explores the trend of the 'juke box' show. Contributors include producer Judy Craymer, Queen guitarist Brian May, theatrical producer David Ian, and composer Benny Andersson. The programme also features new interviews with Stephen Sondheim and Andrew Lloyd Webber. This week's case studies include 'Mamma Mia!' and 'We Will Rock You'. 'The Musical' is written by Brian Sibley and produced by Malcolm Prince.