Marx and Lenin probably would not have appreciated the irony, but after decades of Communist repression of religion, the former Soviet bloc is the source of a profound outpouring of explicitly Christian expression. This is manifested in the music of such composers as Henryk Gorecki, a Pole, and Arvo Part, an Estonian. Part, a refugee from serialism, here writes in a quasi-minimalist style that he calls "tintinnabuli," a sound that echoes medieval composition. A fan of vocal music ("The human voice is the most perfect instrument of all"), he uses choruses to superb effect. This disc includes some of his best work, including the popular Magnificat, beautifully rendered by the Theatre of Voices under Paul Hillier.