Otto Dienel (1839-1905) was organist at the Marienkirche Berlin, Alexanderplatz.
The Joachim-Wagner-organ from 1722 was rebuilt in 1893 by Schlag & Söhne.
He played there 869 organ recitals which included always works of J. S. Bach.
One of Dienel‘s pupils was Karl Straube.
The most of Dienel‘s organ works were published in Great Britain. They had a high level of quality. But Dienel‘s contomporaries said: »Fine, but influended to much by the English taste ...« - it was the worst which one could sayn the time of the German »Kaiser«-period.