World music night at the iTunes festival featured two very different bands with new albums to promote and tricky career moves to negotiate. Oi Va Voi, who opened, were the stars of the evening, simply because it had seemed – until very recently – that the band were finished. When they first emerged, six years ago, they had all the makings of instant celebrities, with their original blend of Jewish klezmer styles mixed with other global influences. Then they threw it away with substandard recordings and personnel changes. Now they are back, as an unexpectedly confident, bombastic and highly entertaining outfit combining klezmer with theatrical pop and soul ballads.

Singer Bridgette Amofah, a former model, sounded as if she could be a soul diva if she hadn't been singing sturdy ballads that sounded like Kurt Weill with an East European edge. She was backed by Anna Phoebe, an impressive violin player who would leap from the drum riser during solos. The male members of the band included Stephen Levi, who played exuberant and sad-edged clarinet (a crucial part of any klezmer band) and joined Amofah for a series of dramatic duets. If this lineup can stay together, Oi Va Voi deserve to be very successful.

Tinariwen, the headliners, have managed to vary their gloriously slinky Saharan blues style on Imidiwan: Companions, their impressive, largely acoustic, new album. Here, acoustic guitar songs featuring tight, rhythmic chanting vocals and hand-claps dominated much of this often low-key set. The band's female singers were mysteriously absent, but this was still a slick and impressive performance. However, it was just too laidback to hold the attention of many of the crowd.