BWV 643 is one of the most perfect examples of Bach's Orgelbüchlein style. A mood of ecstasy permeates this chorale prelude, a funeral hymn reflecting the theme of heavenly joy. The simple cantus firmus sings in crotchets above an accompanying motif of three semiquavers (16th notes) followed by two quavers (eighth notes) that echoes between the two inner parts and the pedal. This figure is also found in the organ works of Georg Böhm and Daniel Vetter from the same era.