This track is built around “Kumushki,” a ritual song from the Trinity/Semik cycle, recorded by folklorists from the singing of Olga Fedoseyevna Sergeyeva, a village singer from Perelazy in the Usvyaty District of Russia’s Pskov Region. Tarkovsky used “Kumushki” in the closing sequence of Nostalghia.
In ethnographic terms, kumlenie is most...