« We need Bach's music, regardless of the instrument on which it is performed » - the violist Tabea Zimmermann has no doubt about it. « You can play his keyboard music on a harpsichord or on a piano. The essential thing for me is to have a coherent approach to the instrument and the way to play it. » Tabea Zimmermann has not changed her "medium" for this recording. She plays on a modern Vatelot viola, built in 1980, with a classical bow.