Professor Robert Winston continues his exploration into the relationship between the music and the medical conditions of composers who suffered mental and physical illness. Franz Schubert was often uncomfortable in the polite circles of middle-class Viennese society. Was he hiding a secret? Prof. Winston looks at the evidence that Schubert was lured into an unsavoury clandestine lifestyle and contracted syphilis, which many writers have assumed cast a shadow over both his remaining life and his music. Producer: Chris Taylor.