Summary: Juan de Marcos, the man who brought together the artists who became Buena Vista Social Club, talks to Ben Eshmade about his Barbican concert with the Afro-Cuba All-Stars on 25 April, and the past and future of Cuban music. Then we jump genres, into a new musical zone where post-classical, electronica and song meet, with FatCat Records and Dustin O’Halloran; plus a touch of world-class classical music, with the new Barbican Associate Orchestra, the Britten Sinfonia.