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Antiphonarium ia canonicarum horarum cantica (Cologne, Germany, 1537), showing German “Hufnagel” (“hobnail”) notation. (Responsory for for 3rd Mass of Christmas, Stirps Yesse virgam) |
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Antiphonarium ia canonicarum horarum cantica (Cologne, Germany, 1537), showing German “Hufnagel” (“hobnail”) notation. (Responsory for for 3rd Mass of Christmas, Stirps Yesse virgam) |