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Johann Jakob Froberger was a German Baroque composer, keyboard virtuoso, and organist. Among the most famous composers of the era, he was influential in developing the musical form of the suite of dances in his keyboard works. His harpsichord pieces are highly idiomatic and programmatic. Only two of Froberger's many compositions were published during his lifetime. Froberger forbade publication of his manuscripts, restricting access to his noble patrons and friends, particularly the Württembergs and Habsburgs who had the power to enforce these restrictions. After his death the manuscripts went to his patroness Sibylla, Duchess of Württemberg (1620–1707) and the music library of the Württemberg family estate.