Kaa, (Franz Ign.) chapel-master at the cathedral of Cologne, in 1783. He published at the Hague six operas of instrumental music.

KAEBERLE, a celebrated performer on the hautboy, at Beuthen on the Oder, about the year 1740. He composed some music for his instrument.

KAEMPFER, (Joseph) a celebrated performer on the double bass, resided in London for some years, after 1783. He was by birth a Hungarian, and originally an officer of the Austrian army. Being in garrison in Croatia, with little to do, the idea first struck him to render himself celebrated as a musician. With this intent, he chose the double bass, conceiving that on that instrument he would have fewer rivals than on any other. Without any master, his genius and taste were his only guides. After a certain time, conceiving that he had attained sufficient power to be heard in public, he went to Vienna, where he was received shortly afterwards in the chapel of prince Esterhazy, then under the conduct of the immortal Haydn. By perseverance in practice, Kaempfer could at length execute on his double bass, (which he used to call his Goliath) not only the most difficult violin passages, but also used the upper tones of his instrument with such delicacy that they resembled those of the harmonica.