Career
He joined Lorenz Christoph Mizler"s Corresponding Society of Musical Sciences in 1747, just a month after Bach himself. Sorge"s writings on thorough-bass and harmony are very competent, and his theoretical grasp of unequal temperaments excelled even that of J. G. Neidhardt (though still taking 1⁄12 comma as an indivisible unit of measure. He cited Bach as "witness" that regular 1⁄6-comma meantone temperament was inadequate to "modern" harmony, and he dismissed Johann Philipp Kirnberger"s schemes of temperament as "no good".