Johann Michael Nicolai [Nicolaÿ] was a German composer. Although nothing is known of his musical studies they must have reflected the high level of the musical tradition of Thuringia. Before 1655 he was a member of the court orchestra of the Duke of Saxe-Lauenburg, whose musicians were often invited to play for the Margrave of Brandenburg; in 1675 he dedicated his first set of Instrumentalische Sachen to Margrave Christian Ernst in remembrance and gratitude. From October 11, 1655 until his death he was an instrumentalist in the Stuttgart court orchestra, and he also taught the choirboys. Among other instruments he played the violone. According to contemporary accounts, members of the court orchestra met regularly in his house for an 'exercitium musicum'. He was friendly with the composer P.F. Böddecker, organist of the collegiate church, though on less good terms with the deputy Kapellmeister, the composer J.A. Kress.