Edito de Ach Gott, erhör mein Seufzen, BWV 254Johann Sebastian Bach composed hundreds of chorale settings for chorus.About half of them are associated with chorales from his larger choral works such as the Cantatas and Passions; the remainder are just independent entities. Also, Bach never grouped them into a 'book' or other identifiable collection. That hasn't stopped others from grouping them together, and Helmut Rilling in connection with his Hanssler cycle of the complete Bach works has done just that based on the liturgical year. As part of his cycle, Rilling has devoted a few discs to these choral pieces.