Josef Antonín Štěpán or Joseph Anton Steffan (c. March 1726 – c. April 1797) was a Bohemian-Austrian classical era composer and harpsichordist.
Steffan was born in Kopidlno, near Hradec Králové, Bohemia in March 1726, the son of a schoolmaster and church organist.
There, taken in the household of Count Schlick, he became a student of Georg Christoph Wagenseil.
As one of the most respectable harpsichordist in Vienna he became the piano teacher of Maria Carolina and Marie Antoinette.
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