The popular image of African art - the mask and figure sculpture of so-called tribal art - completely ignores the developments of the 20th century. To explore the relationship between past and present and how artists in Africa address current concerns, John Picton visits Ghana,
Nigeria, Kenya and South Africa to listen to artists talking about their work before and after independence - or, in the case of South Africa, in the contesting and defeat of apartheid.
Compiled and produced by Judith Bumpus