In 1950s South Africa, under the system of apartheid, a powerful song catches fire among Black communities. But to sing it could result in imprisonment. Its author - the musician, poet and union organiser Vuyisile Mini - prepares to put his life on the line.

Stories of bold voices, with brave ideas and the courage to stand alone. Historian Alex von Tunzelmann shines a light on remarkable people from across history.

A BBC Studios production.

Producer: Michael LaPointe Written and presented by Alex von Tunzelmann Executive Producer: Paul Smith Commissioning editor for Radio 4: Rhian Roberts