In the Seventies, the seminal German progressive rock band Faust helped define the genre "Krautrock", a psychedelic sound characterised by drones, electronic effects, structured dissonance and eccentric vocals.

Reformed in the Nineties around original members Jean Herve Peron and Hans Joachim Irmler, they appeared last Friday with an axle grinder that briefly showered sparks over a worried-looking British Sea Power.

As this incendiary jam with BSP faded, Faust began to take hold with the hypnotic murmerings of Mamie Is Blue from their 1973 classic So Far, and gradually revealed their mighty power.

"This is not music," the impishly delighted Peron informed the crowd from behind his hoary beard and twin-neck guitar, as the bald-headed figure of Irmler bashed a percussion sheet behind him. "It's just sounds we find somewhere and put in some order."