voice probably illustrates the old man Simeon. The soprano voice shows more clearly that the situation applies to that of any believer. Structure and scoring The cantata is structured in five movements, with alternating arias and recitatives. In the first version it was scored for a bass soloist and a Baroque instrumental ensemble of oboes (Ob), two violins (Vl), viola (Va), and basso continuo.. It takes about 23 minutes to perform. Another version exists for soprano, transposed from C minor to E minor with the oboe part replaced by flute and slightly altered. In the 1740s version for bass, an oboe da caccia is the obbligato instrument. In the following table, the scoring follows the (New Bach Edition), for the version for bass in C minor. The keys and time signatures are from Alfred Dürr, and use the symbol for common time. The continuo, played throughout, is not shown. Music The first movement, an aria, begins with an expressive melody of the obbligato oboe which is picked up by the voice on the words "" (I have enough). The beginning upward leap of a minor sixth is reminiscent of the aria "" (Have mercy) in Bach's St Matthew Passion and the aria "" (When will you come, my salvation?) from . The first motif is changed to a phrase that appears at the end of three vocal sections. A similar motif begins the middle section on the words "" (I have seen him), turning upwards in the end. Klaus Hofmann notes a "feeling of serene contentedness with life" in "elegiac tones" as the aria's expression. Musicologist Julian Mincham notes "that instant when body and soul come to rest and are resigned and in complete harmony. Bach encapsulates this experience of peace and acquiescent submission beyond anything that mere words can convey." He sees the "flowing oboe arabesques", which the singer imitates twice on the word "" (joy) as a "clear indication that their expressive function is to proclaim the Christian's personal bliss, an inextricable element of this important experience of life". The following recitative begins with the same words as the aria, "", on a new melody. The middle section stresses the words "" (Let us go with this man!), speaking of following Jesus, by an arioso in which the continuo follows the singer. The central aria, beginning "" (Fall asleep, you weary eyes), is a (slumber aria). In a