Leif Ove Andsnes Norwegian Chamber Orchestra Cultural Centre Concert Hall Norwegian pianist Leif Ove Andsnes is one of the foremost classical musicians today, and his Arts Festival concert on Friday proved this. Andsnes does not rely on vulgar gestures or showy passion to draw crowds. It is rather his delicate touch, crystalline tone and sincere poetry that make his performance immensely enjoyable. Andsnes performed for about half the concert, as both soloist and conductor in two concertos: Haydn's No11 and Mozart's No17. He coped with the venue's poor acoustics to bring out the glittering phrases and witty turns in Haydn's work. His textural clarity and scintillating fast runs were refreshing, and he could make the piano sound intimate even in the most demanding passages. But most impressive was his lyricism in the slow movement, at once balanced and nuanced. Andsnes' exquisite tone shone throughout his Mozart concerto performance, too, which was both exuberant and measured in the outer movements. Again, an absorbing slow movement crowned the experience. Unfortunately, the Norwegian Chamber Orchestra was not of the same league, and Andsnes could not coax them into giving integrated and subtle accompaniment - although chamber music-like rapport was not lacking either. But the orchestra did settle into a vigorous, sometimes brash, style, full of life but occasionally lacking in finesse.