With Symphony No. 4, Arvo Part returns to symphonic structure and scope in a work scored for string orchestra, harp, tympani, and percussion.

"Paul Hegeman highlights the music of renowned Estonian composer Arvo Pärt while attempting to unveil the mystery around the purportedly reclusive writer of such famed works as "Tabula Rasa," "Fratres," "Trivium" and "Für Alina," all stirringly performed here. But Hegeman, who also shot the film (with Auke Dijkstra), eschews a typical biographical recounting of the 83-year-old maestro's prolific life; we learn little of his past, his process or...