Henle Urtext Edition edited by Henrik Wiese.  Did Mozart intend this work to be a duo for two bass instruments, or as the simple basso-like manner of the second part suggests, a sonata for bassoon and keyboard instrument?  We will probably never know the answer because the autograph is missing.  This edition allows different instrumentation.  It not only contains scores for the duo version but also one so it can be performed as a solo bassoon sonata, following the style of the time with a figured bass realization.  And cellists, who are not blessed with many works by Mozart, will appreciate the version of this endearing work for cello and figured bass.  Preface in Ger., Eng. and Fr.  Comments in Ger. and Eng., p. 14-15.  Score (15 p.) and parts.