Austrian composer. As a boy he served as chorister under Frantishek Tuma; later he studied clavier and counterpoint with Wagenseil. By 1764 he was choral director at St. Peter's, Vienna, and by 1766 Kapellmeister. In 1769 he became teacher to the royal family; he was later passed up for the post of court Kapellmeister, which went to Giuseppe Bonno instead. He composed a large number of vocal works, including Masses, motets, vespers, and litanies; numerous symphonies and chamber works (some of which have occasionally been misattributed to Haydn); and clavier sonatas and variations.