Neumeister ascribes the choral prelude to "Ach Gott vom Himmel, sieh darein" to Johann Michael Bach. In two other manuscript sources (both the Plauener Orgelbuch and the Königsberger manuscript) however the piece is ascribed to Johann Heinrich Buttstett. Neumeister's error was probably caused by the fact that in most manuscripts of the time the composer was indicated with intials only, often written with ligatures. That way the letter combination JHB is easily read as JMB (or the other way around).