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“This repertoire — with its contrapuntal extravaganzas, its antiphonal balances, its espousal of instruments that chuff and wheeze and speak directly to a microphone — was made for stereo,” he wrote.

They spread out on street corners, creating a cascade of sound throughout the community as they take turns playing lines of antiphonal hymns, she said.

Konopka divided the ensemble into a double string orchestra and had them seated antiphonally on the stage.

In “Sorrowful Soil,” Björk summons overlapping, antiphonal choirs for a prismatic yet coolly scientific consideration of motherhood: “In a woman’s life she gets 400 eggs but only two or three nests.”

More complicated are choral passages, especially antiphonal ones, a challenge for untrained performers but a compelling study in building harmony.