Hieronymus Praetorius (10 August 1560 – 27 January 1629) was a Northern German composer and organist of the late Renaissance and early Baroque whose polychoral motets in 8 to 20 voices are intricate and vividly expressive. Some of his organ music survives in the Visby Orgel-Tabulatur, which dates from 1611. (He was not related to the prolific Michael Praetorius, known as a theorist and for Terpsichore, but the large Praetorius family tree produced many distinguished musicians during the 16th and 17th centuries.)

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