Silvestrov’s Sixth Symphony is a dense work leavened by inventive scoring and powerful narrative ideas. The central movement, by far the longest, begins with an Andantino section that quotes from Mahler’s Fifth and then progresses on a journey that includes a violent brass-percussion eruption that fades away. There are five movements, all played without a break, and ECM’s excellent notes will help guide the listener new to this composer through an adventurous exploration into a piece that bears frequent repetition. The Sixth is very much in the manner of other Silvestrov works such as hisPostludium, which explores musical and personal memories--recommendation  enough for anyone familiar with his style. The broadcast orchestra under the baton of Boreyko, who has often conducted Silvestrov’s large-scale works, is well drilled and delivers a moving performance of this deep and powerful symphony. The sonics fit the music well, darkly resonant on a wide stage with well-defined solo and section work. A thrilling listening experience.--Dan Davis