Wikipedia
The Hamburgische Kapitänsmusik (Hamburg Captain’s Music) refers to a body of compositions by Georg Philipp Telemann. They comprise sacred oratorios and secular serenades. However, the oratorios were intended to be performed in a secular setting, the Hamburg Drillhaus, and their characters are almost exclusively allegorical. The Kapitänsmusik was written for the annual banquet (or convivium) of the Hamburg militia captains. The works span the period from 1723 to 1766, although many of the manuscripts have now been lost, and in several of those years no banquet was held. Although Telemann’s grandson Georg Michael Telemann inherited many autographs and manuscript copies of Telemann’s vocal works, the rest of his musical estate, including the Kapitänsmusik, was sold at an auction in Hamburg on September 6, 1769. Much of that material has since disappeared, and the auction catalogue has not survived. Of the 36 Kapitänsmusiken that Telemann wrote, only 10 oratorios (with nine complete oratorio–serenade pairs) plus a few separate pieces are extant today.