This publication provides a specific arrangement of J.S. Bach's choral work for two pianos, adapted by the renowned pianist Myra Hess. The text serves as a technical resource for musicians, presenting the musical notation required to perform this specific arrangement. It documents the collaborative legacy between Bach's original composition and Hess's interpretation, which became a staple of the piano repertoire in the 20th century.

Musicians and musicologists frequently cite Myra Hess's arrangement as a standard pedagogical and performance text for piano duos. Experts highlight the clarity of the notation and its enduring relevance in classical music education.