[4] From 1724 to 1730, Mizler studied at the Ansbach Gymnasium with Rector Oeder and Johann Matthias Gesner, who became director of the St. Thomas School, Leipzig, from 1731 to 1734.
During this time, he also pursued the study of composition and had some association with Johann Sebastian Bach, whom, he wrote, he had the honor to call his "good friend and patron.
[7] At about this time, Mizler began a music publishing business; and he returned school to take a doctorate of medicine at Erfurt University in 1747.
[12] In association with the Załuski Library, Mitzler published and edited Poland's first scientific periodicals: Warschauer Bibliothek (1753–55), Acta Litteraria... (1755–56), Nowe Wiadomości Ekonomiczne i Uczone [Economic and Learned News], 1758–61 and 1766–67).
[1] In 1756 he set up a printing establishment, which in 1768 he conveyed (together with a type foundry) to Warsaw's Corps of Cadets, while retaining the business' directorship.
At this printing establishment, Mitzler published scholarly editions of historic sources (a collection of chronicles, Collectio magna, 1761–71), literary works, and textbooks for the Corps of Cadets.
"[15] Mitzler was a polymath: his interests encompassed music, mathematics, philosophy, theology, law, and the natural sciences.
The entry requirements of this society resulted in both the famous 1746/1748 Haussmann portrait of Bach and his Canonic Variations on "Vom Himmel hoch da komm' ich her" for organ, BWV 769.