The Oslo World organiser are at pains to point out that, despite the name, they are not a “world music” festival. And with good reason, really. There may have been a few familiar WOMAD veterans headlining over the week-long event – Senegal’s Youssou N’Dour, Malie's Fatoumata Diawara, the queen of Cuba Omara Portuondo – but the emphasis was emphatically not on any kind of beads-and-bongoes authenticity.