Dear Visitor! If the events list is obviously not up-to-date, please refer to following sites (in German, but the dates are easily legible):

Services and Worship within the Lutheran City Parish of Rostock:
http://www.marienkirche-rostock.de/innenstadtgemeinde/gottesd.htm>>

Concerts and other events of Church music:
http://www.marien-musik.de/index.php/termine>>