(b Freinsheim, 1779; d Kreuznach, 1839). Ger. composer and theorist. Friend of C. M. von Weber. Comp. songs, church mus., and chamber works. Wrote several textbooks, incl. a study of the authenticity of Mozart's Requiem (1826). His most important theoretical work was the Versuch einer geordneten Theorie der Tonsetzkunst (Mainz, 1817–21, 1832, Eng. trans. 1851) in which he proposed a new and easier system of terminology and figuration.
From The Concise Oxford Dictionary of Music in Oxford Reference.