|(b Vienna, 9 April 1717; d there, 3 Oct 1750). Austrian composer. He became organist at St Charles's Church, Vienna, in 1738 or later, and was also a teacher. Though little known abroad, he was, like Wagenseil, a leading Viennese composer. In hisc 20 symphonies he approached Classical sonata form; most have three movements, but one (1740) is the first known four-movement symphony with a third-movement minuet. His several concertos (most for harpsichord) also have progressive elements; his various chamber, vocal and keyboard works are more conservative.
Monn's works have been confused with those of his brother Johann Christoph (1726-82), who also worked in Vienna and composed keyboard and other instrumental music.