This performing Urtext edition contains "free" organ pieces (i.e. not based on a chorale) and chorale partitas from various source traditions. Owing to doubts about their authenticity , they did not appear in the New Bach Edition until the end of 2003 (NBA IV/11). Today, however, scholars view Bach’s authorship of these pieces either as certain (e.g. the valuable Fantasy in C minor, BWV 1121) or at least worthy of serious consideration. We therefore decided to issue them in this separate...