- Gunter Hempel
German family of publishers and musicians. Johann Friedrich Hartknoch (b Goldap, 18 Sept 1740; d Riga, 1 April 1789), whose father trained him as a pianist, became the nine-year-old J.F. Reichardt’s teacher in 1761. He founded a book publishing firm in Mitau (now Jelgava) in 1763; a branch office, later established in Riga, soon became the main office, where he also published music, including Reichardt’s Vermischte Musicalien, vocal scores of Singspiele and concertos. A catalogue of the firm (c1785) shows a predominance of works by the Mannheim school and by Bach’s sons Carl Philipp Emanuel and Johann Christian; the firm also published important writings by Herder (a close friend of Hartknoch’s), Kant, Lomonossow, Karamsin, Knigge and Katharina II. Hartknoch’s son Johann Friedrich Hartknoch (b Riga, 15 July 1768; d Dresden, 7 Sept 1819) gave up the Riga business in 1798 and moved to Leipzig in ...