The fifth of six programmes on photography explored from a sonic perspective presented by Mark Aitken. This week he explores the transcendental work of Brazilian artist Mario Cravo Neto and his show at ABP in Rivington Place - Caressed by the Serene Expectation of Light. Curator Gabriela Salgado discusses how the show came to be and Mark celebrates the festival of Yemanja with music from Caetano Veloso, Gilberto Gil and Suba. A link to photo under discussion is here.