In 1982, David Humphreys suggested that BWV 565 may have been composed and/or arranged by Kellner, or by someone from the circle around Kellner. Despite many stylistic similarities, however, Kellner was ruled out a quarter of a century later: "in comparison with the style of Kellner, BWV 565 more resembles the style of J. S. Bach"; "many of Kellner's keyboard pieces revealed that his style boasts pronounced "galant" elements ... this clearly stands in strong contrast to the dramatic style of the Toccata BWV 565".