Expressing the good news of Christ's birth who is born to save, this medieval carol calls all Christians to "rejoice with heart and soul and voice!" The earliest manuscript of the text dates from around 1400 (Leipzig), though the carol wasn't published until 1533 in Joseph Klug's Geistliche Lieder (PHH 126). Mention of the carol, however, was made by a fourteenth century writer who claimed that angels sang this hymn while dancing with the mystic Heinrich Suso (d. 1366). The carol is part of the late medieval tradition of teaching Bible stories to peasants by means of folk music. The original bilingual text combined Latin and German.
Psalter Hymnal Handbook