Heard this advertised on the radio this morning - it's about a boy with CF. Here's the programme prÃ©cis:
""The flagship documentary series returns with Emmy Award-winning director Stephen Walker's film on remarkable musical prodigy Alex Stobbs. Despite suffering with a strong form of cystic fibrosis, which is slowly destroying his digestive system and lungs, Alex has shown an outstanding gift for music. The film follows Alex as he sets out to achieve his goal of conducting a performance of Bach's Magnificat in Eton's 15th-century chapel, before an audience of hundreds.""
Channel 4, Thursday 24th January, 9pm.