If blues was the devil's music then at least one of his henchmen cruised over Buenos Aires and picked up tango. Like the blues before it, tango with the influence of Astor Piazzolla, is now infecting sinners worldwide and there are wicked musicians in many places playing this highly sensuous and often complex music. The quartet Tango Siempre have established themselves as contemporary interpreters playing pieces they have written themselves or commissioned from others. The tango they play is recognisable from the rhythmic base but in other respects it is highly original and far more complex in structure than anything that came from the dance halls of Argentina.

It was a stroke of devil's magic to add the dexterity and passion of Israeli saxophonist Gilad Atzmon and the highly original percussion and electronic remixing of Stephen Argelles. Tango Siempre on their own play beautifully but with the addition of Atzmon lifting off into one solo after another, mixing with characteristic agility the feel of tango with the speed and excitement of bebop, everything suddenly took on yet another dimension. Atzmon on his own could probably solo until dust fell from the rafters, but he was working much of the time from a written score with perfect restraint. In fact, the interplay between Ros Steven's almost classical violin and the exotic, at times almost human, wailing of the soprano was extraordinary. To this was added the piano of Jonathan Taylor, able to shift through from blues right across to Rachmaninov without losing the spirit of the tango, and Peter Rosser's accordion, which also moved into unusual territory at times.

For the first half of the evening, only Yaron Stavi on bass held down the rhythm with characteristic precision; but after the interval he was joined by Stephen Argelles on a minimal drum kit and electronics. The result was subtle, unconventional and highly effective, adding to the music not just percussion but yet another angularity to the rhythm, plus strange, restrained loops and effects as well. There was a strong desire to get up and dance in the Wesley Memorial Church.