Radio: Traditional and contemporary

This week we explore two different types of radio. The traditional, in the form of Alistair Cooke's Letter From America, as Rajan interviews Alvin Hall, presenter of a series about the Letters archive.

And then a more contemporary take on radio, from Phil MaGuire, who is the Chief Executive of the Prison Radio Association in the UK, and the presenter of a documentary about a prison radio project in Trinidad and Tobago.

(Image: Alistair Cooke)