On the heels of the discovery of an unknown aria in recent years, German scholars have announced the discovery of an unknown organ composition by J.S. Bach, as reported (in German) here, with a report in English here. The work is a chorale fantasy on the chorale “Wo Gott der Herr nicht bei uns hält”.

A report here says that the piece will be give its modern premiere in Germany on June 7, 2008, at the Halle Handel Festival, played by Martin Haselböck.