The musical powerhouse has spawned huge hits, but which do its troupers love to belt out – even for the 1,700th time? From Broadway legend Idina Menzel to composer Stephen Schwartz, they reveal all
Idina Menzel originated the role of Elphaba, the witch of the west who turns out not to be so wicked (but still very green). She won a Tony on Broadway, starred in the West End run and made a cheeky cameo in the recent film version
