Johann Crüger (9 April 1598 – 23 February 1662) was a German composer of well-known hymns. He was also the editor of the most widely used Lutheran hymnal of the 17th century, Praxis pietatis melica.Crüger was born in Groß Breesen (now part of Guben) as the son of an innkeeper, Georg Crüger. He was an ethnic Sorb, baptized as Jan Krygar.He studied at the nearby Lateinschule (then located in Guben) until 1613, and that school's teaching program included music and singing.He then traveled to Sorau and Breslau for further education, and finally to Regensburg, where he received musical training from Paulus Homberger (1560–1634). In 1615 he traveled to Berlin, where he studied theology at the Berlinisches Gymnasium zum Grauen Kloster. In 1616 he was engaged as a house tutor to the von Blumenthal family; his pupils included Joachim Friedrich von Blumenthal. From 1620 he studied theology at the University of Wittenberg and trained himself further in music through private study.