BWV Anh.

'Bach works catalogue annex'), is a list of lost, doubtful, and spurious compositions by, or once attributed to, Johann Sebastian Bach.

Wolfgang Schmieder, the editor of that catalogue, grouped the compositions by genre, largely following the 19th-century Bach-Gesellschaft (BG) edition for the collation (e.g. BG cantata number = BWV number of the cantata):[2] The Anhang of the BWV listed works that were not suitable for the main catalogue, in three sections: Within each section of the Anhang the works are sorted by genre, following the same sequence of genres as the main catalogue.

Schmieder published the BWV's second edition in 1990, with some modifications regarding authenticity discriminations, and more works added to the main catalogue and the Anhang.

A strict numerical collation was abandoned to insert additions, or when for another reason compositions were regrouped.

Authenticity discriminations, based on new research, could lead to such repositionings within the catalogue, e.g. "BWV Anh.

The editors of this third edition of the Bach-Werke-Verzeichnis (projected to be published in 2020) recognise that the BWV Anh.