Over on Radio 3's Night Waves (10.45pm), Paul Allen conducts an investigation into the history of the human voice, which was at one time ludicrously believed to be an expression of male potency. Interesting concept.
Nowadays, it's seen as one of the unassailable virtues of radio, if FOR - The Future of Radio (11.30pm R4) is anything to go by. This is melange of soundbites and archive clips which teeters on the brink of being an advertorial. The show nevertheless raises important questions about the impact of digital technology on the medium.