The BACH.Bow is a convex curved bow which, unlike the ordinary bow, renders possible polyphonic playing on the various strings of the instrument.
In 1989, Michael Bach Bachtischa began developing it, encouraged by John Cage, Dieter Schnebel, Karlheinz Stockhausen, Walter Zimmermann, Mstislav Rostropovich, Janos Starker, Lorin Maazel and Luigi Colani – and since then many pieces have been composed especially for it.
The solo repertoire for violin and cello by Johann Sebastian Bach the BACH.Bow is particularly suited to it: and it was developed with this in mind, polyphonic playing being required, as well as monophonic.
In 1996 Michael Bach Bachtischa established the studio BACH.Bogen in Stuttgart, Germany and Wissembourg, France.