From 1524? till his death he lived at Magdeburg?, where he occupied the post of teacher or cantor in the Protestant school. The senator and music-printer Rhau, of Wittenberg?, was a close friend of Agricola, whose theoretical works, providing valuable material concerning the change from the old to the new system of notation, he published.
Agricola was also the first to harmonize in four parts Martin Luther's chorale, Ein' feste Burg .
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