Luther's poor physical health made him short-tempered and even harsher in his writings and comments. His wife Katharina was overheard saying, "Dear husband, you are too rude," and he responded, "They are teaching me to be rude." In 1545 and 1546 Luther preached three times in the Market Church in Halle, staying with his friend Justus Jonas during Christmas.
Source: Wikipedia
In 1713, Sebastian Bach was offered a post in Halle when he advised the authorities during a renovation by Christoph Cuntzius of the main organ in the west gallery of the Market Church of Our Dear Lady. His son Wilhelm Friedemann Bach was an organist here.
Source: Wikipedia