Trust Me, I’m a Doctor, BBC2, 8pm

IT’S BBC Music Day on Friday, and the Trust Me team are getting in the mood by asking whether singing and dancing can give you a natural high similar to that experienced by runners. If so, they want to know what that might mean for our approach to mental health. Psychiatrist Alain Gregoire explores the research suggesting that music can help speed up recovery from post-natal depression, while Dr Zoe Williams discovers that singing, along with exercise, social interaction and changes in diet, can improve the health of those living with dementia.

Upstart Crow, BBC2, 8.30pm

WILL decides to write a play about the life of Julius Caesar but he is unsure about how to deal with his assassination. After all, Her Majesty is not likely to approve of any play about killing the head of state, and Robert Greene is particularly keen to label Will a traitor. Meanwhile, things are not going well in the theatre either. Burbage is hogging the limelight and the other players decide to depose him. Starring David Mitchell, Harry Enfield and Mark Heap.

Joanna Lumley’s Silk Road Adventure, STV, 9pm

AS her Silk Road journey continues, Joanna travels to Iran, where she meets many people eager to share the culture and innovations of the Persian civilisation, which spread far beyond modern-day Iran. From ancient water gardens, through desert cities, endless bazaars and majestic mosques, Joanna discovers a country brimming with hospitality and warmth. Her Iranian adventure finishes in the Persian Empire’s ancient ceremonial capital, Persepolis.

Peston, STV, 11.05pm

ROBERT Peston’s political magazine show is moving from Sunday mornings to Wednesday nights. If you’re wondering if there are any internal ITV politics behind that decision, it seems there’s a simple explanation: the powers-that-be noticed that the evening repeat got twice as many viewers as the original broadcast and decided to embrace it by making the programme a night-time show. The presenter and his co-host Anushka Asthana will be speaking to guests from across the political spectrum about the latest developments in Westminster and, of course, Brexit.