Another one of the pieces from the organbook of Matthias Rottenau (Mus. Ms. 40615 from the Staatsbibliothek zu Berlin) that is probably possibly perhaps a Ricercar. The manuscript contains, I think, some errors in this piece. Unlikely dissonants that are more likely caused by a transcription error than that they are intentional. As usual I indicate these editorial choices in the score, so anyone can choose to play the notes as they are in the manuscript, or as they are in my edition.