The writer Colum McCann isn’t afraid to take on big subjects – and his ambition has delivered a shelf full of awards, from both sides of the Atlantic.

He grew up in Dublin but moved to the United States in the mid-1980s and now lives in New York. That city is the setting for his international bestseller Let the Great World Spin, in which Philippe Petit’s tightrope walk between the Twin Towers in 1974 plays a key role. He’s also written a novel about both sides of the conflict between Israel and the Palestinian people, from the perspectives of two fathers.

He collaborated with Diane Foley, whose son James was executed by Islamic State militants, to create a memoir, American Mother, which was published last year. Most recently his novel Twist focuses on the vulnerability of the undersea cables carrying the world’s internet data.

Colum's music includes Gorecki, Prokofiev, Brahms and Haydn.

Romola Garai won her first professional acting roles as a teenager, and since then, her career has taken her in a wide range of dramatic directions.

Most recently, she won a 2025 Olivier Award for her role in The Years, a sometimes shocking play based on a novel by Nobel Prize winner Annie Ernaux – and she was competing against herself, with a nomination in the same category for her part in Giant, a play about Roald Dahl.

Her previous stage work includes playing Cordelia opposite Ian McKellen’s King Lear, and her extensive screen credits include the title role in a BBC adaptation of Jane Austen’s Emma. She also won acclaim for The Hour, a drama set behind the scenes of a TV current affairs programme in the 1950s. In 2020, she went behind the camera to write and direct a horror film called Amulet.

Romola's music choices include John Taverner, Handel and Keith Jarrett.

Terry Gilliam is one of the world’s most imaginative and original directors. He first made his mark more than 50 years ago, with the animated opening sequence of Monty Python’s Flying Circus, when a giant foot stomped on the titles with a burst of flatulence.

That spirit of mischief, fun and creative adventure has informed many of his films: they include Time Bandits, Brazil, The Fisher King and The Adventures of Baron Munchausen, working with stars such as Matt Damon, Uma Thurman, Brad Pitt and Robin Williams.

He’d be the first to admit that life as a film maker can be complicated: he’s faced natural disasters, budget overruns and clashes with studio executives. But he has no plans to retire: now in his 85th year he’s working on a new film called Carnival at the End of Days starring Johnny Depp as Satan and Jeff Bridges as God.

Terry's list of musical passions includes Richard Strauss, Berlioz and Delius.

The barrister Monica Feria-Tinta has been described as one of the “most daring, innovative and creative lawyers” in the UK for her work in defending our natural world.

She was born in Peru and was the first Latin American lawyer to be called to the Bar of England and Wales. She began by representing indigenous peoples, from Latin America and the Pacific, setting ground-breaking legal precedents. More recently she has found herself pleading for rivers, oceans, cloud forests and endangered species. As she says: “I had become a barrister for the earth,” and she’s written a book about ten of her landmark cases, called A Barrister for the Earth: Ten Cases of Hope for Our Future.

Monica's music choices include Sibelius, Monteverdi and Chopin.

As part of Radio 3's Boulez at 100 day celebrating the centenary of composer and conductor Pierre Boulez, Michael Berkeley's guest is someone who knew Boulez well - composer and musicologist Gerard McBurney.

Producer: Graham Rogers

To listen to this programme on most smart speakers, say "Ask BBC Sounds to play Private Passions".

The set and costume designer Bob Crowley says he creates ‘other worlds’. The stage is where his imagination runs riot, at the National Theatre, the Royal Shakespeare Company the Royal Opera House, the West End, Broadway and beyond.

Dr Sian Williams was a familiar face and voice on BBC Breakfast, television news, and Radio 4 for many years, and she’s now a presenter on Radio 3 Unwind on BBC Sounds. There she hosts a three hour programme every morning, sharing a restorative selection of music with the aim of supporting your well-being. She also presents Life Changing on Radio 4, interviewing people who have lived through extraordinary events.

In 2012, she started to train as a psychologist and was awarded a doctorate in Counselling Psychology four years ago. Since then she has been working in the NHS primarily, with first responders who are experiencing anxiety, stress and trauma.

Sian's musical selection includes Mozart, Rachmaninov, Max Richter and Vivaldi.

Daniel Levitin is a psychologist and neuroscientist who is fascinated by the way our brains respond to music. He first worked as a musician, playing in bands, and then became a record producer and engineer. He’s worked with some of best-known names in the world, including Stevie Wonder, Joni Mitchell, Paul Simon, Sting and The Grateful Dead.

In his 30s he went back to university to study psychology. He’s now Professor Emeritus at McGill University and has written several best-sellers investigating why music has such a powerful effect on us as a species. His most recent, Music as Medicine, is about the healing power of music, and how it might be used to help treat PTSD, slow the spread of neurodegenerative diseases and even help combat multiple sclerosis.

Daniel's music choices include Debussy, Dvorak, Thelonious Monk and Beethoven.

Ursula Jones is “nothing short of a musical icon” – at least according to the Royal Philharmonic Society, who made her an honorary member last year at the age of 92. She has devoted her life to music, and has long championed the work of young performers – she gave Daniel Barenboim his first break as a conductor in London, when he was just 23.

Ursula was born in Lucerne in 1932, where her father was one of the founders of the Lucerne Festival, so famous musicians, including the likes of Richard Strauss, were never far away.

She came to London in 1954 and worked as a secretary for the Philharmonia Orchestra, moving on to co-found the English Chamber Orchestra in 1960. She married the eminent trumpet player Philip Jones, and later managed his Brass Ensemble.

Music isn’t her only fascination: she completed a doctorate in archaeology at the age of 60, and in 2021 she cycled 100km to raise money for the charity Brass for Africa.

Professor Anthony Kessel has a double life – or at least two very different roles. As the National Deputy Medical Director of NHS England, he’s one of the senior leaders responsible for improving the quality of our health services and patient care. He’s an international authority on public health and played a key role in the NHS’s response to the Covid pandemic.