Profile this week takes a look at the Senegalese singer Youssou N'Dour who has surprised many by announcing he is to quit music for a career in politics. The son of a car mechanic, N'Dour went on to become one of the most influential recording artists in the world. With presidential elections taking place in Senegal next February, Edward Stourton asks if N'Dour has what it takes to succeed on the political stage.

Producers: Ben Crighton and Hannah Barnes.