Rûwâhîne

Perched somewhere between the industrial-noise soundscapes of Throbbing Gristle, grungy club beats and a fairly obscure Saharan healing ritual of possession and trance, Rûwâhîne is about as far from easy listening as you could get. It derives from the Djerid Desert in southern Tunisia, home to black communities from the sub-Sahara – the descendants of Hausa slaves – and where the Banga ritual of Sidi Marzuq is practiced. The ritual is not exorcism, but its opposite, adorcism – accommodating the possessing spirit rather than exorcising it. It is sacred music, it's rock, it's techno, electronica and it's post-industrial: it's one hell of a racket. The Banga like to holler; and they like the heavy beat of drums.

On stage, Ifriqiyya Electrique feature three musicians with electric guitars and bass, drums and qaraqab (metal castanets) and they perform to a backdrop of filmed projections of processions, rituals and trance ceremonies made by guitarist and filmmaker François R Cambuzat. Experienced on CD, we have nothing but the visceral, pounding and relentless sound. Loosely comparable to Gnawa, or the joyous noise of something like Konono No 1, this is hard to listen to, yet hard to turn off once you're in. Get the full live experience at this year's WOMAD.