Like his sisters Wilhelmine, Maria Carolina, Sophie Anna Henriette,[2] Juliane and his brother Friedrich, he received music lessons from his father Franz Benda.
[5] He was also a prized piano teacher; among his students were King Friedrich Wilhelm III as well as his brother Ludwig, who gave him a lifelong patronage.
Other students of Karl Benda were Carl Friedrich Rungenhagen, the actor and singer Friedrich Ludwig Seidel [ca] and the singer Luise Rudorff, whom he saw performing in the Weimarer Hoftheater in 1792,[6] when he was visiting his sisters Wilhelmine and Maria Carolina.
On 28 April 1825, while employed as Kammerdirektor for the princes of Thurn und Taxis, he was raised to the nobility by the Bavarian King.
The latter also pursued a career in higher civil service and was a committed patron of music on the board of several societies, including the Sing-Akademie zu Berlin.