Steven Isserlis (Hyperion) CONTEMPORARY classical composers aiming for spiritual depth and new dimensions in their music have long been seen as in the artistic vanguard, never more so than if they find a unique voice. John Tavener, with his exploration of the Anglican faith in the 1960s, then his conversion to the Russian Orthodox Church in 1977, is one who found that unique voice. Renowned cello player Steven Isserlis, a devotee of Tavener and a personal friend through much of his career, is noted for the lyricism, tenderness, power and beauty in his playing and he helped shape and realise...