Disney hitmaker Alan Menken: ‘I won an Oscar then Howard Ashman told me he was dying’

The mastermind musician behind ‘Aladdin’ and ‘The Little Mermaid’ has more Oscars than anyone alive. As ‘Hercules’ the musical hits the West End, he speaks with Lydia Spencer-Elliott about his late collaborator Howard Ashman, the live-action boom, and difficult directors – ahem, Guy Ritchie