The Trio sonata in G major, performed by the Netherlands Bach Society for All of Bach, was probably performed at a coffee house concert of Gottfried Zimmermann. When Bach got the opportunity to take over the leadership of the most important collegium musicum in Leipzig, in 1729, he did so without a moment’s hesitation. The weekly concerts by the student music association in the coffee house gave him exactly the artistic elbow room he lacked in his post as cantor.
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