This chorale prelude by J.S. Bach sets the hymn tune 'Alle Menschen müssen sterben' with a profound sense of resignation and introspection. It is characterized by its rich contrapuntal writing and tender melodic treatment.
Achieving a truly singing tone in the melody amidst the contrapuntal texture requires careful voicing and articulation.
Alle Menschen müssen sterben (BWV 643) is rated Henle level 6 of 9 — advanced repertoire, roughly ABRSM grades 7–8. In the RCM system it corresponds to about level 7.
You should be comfortable at Henle level 6 — meaning you can already play level 5–6 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
A typical performance of Alle Menschen müssen sterben (BWV 643) lasts about 2.5 minutes.
Alle Menschen müssen sterben (BWV 643) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.