Morocco's Gnawa tradition has been producing trance music for many centuries, but Nass Marrakech take the idea in a new, more global direction, incorporating elements as unlikely as Indian tablas and Japanese shakuhachi flute into the mix. It could be a worldbeat mess, but instead it proves to be a triumph, simply because the band features some of the best gimbri playing since Hassan Hakmoun and a firm sense of trance and its role in the ensemble's music. So while there are elements of flamenco (Morocco and southern Spain are close in both history and geography), the true roots remain plainly visible. The harsh, jangly rhythm of the karkabas, the tiny Gnawa steel finger cymbals, run through this collection in sizzling fashion while other world-music ideas float on top, anchored by Abdel Bensaloum's gimbri. Magical and mesmerizing. --Chris Nickson