An exceptional event took place from 31 October to 1 November 2025 in St Thomas Church in Leipzig, where Bach was cantor: Johannes Lang performed the complete organ works of his illustrious predecessor. The 22-hour programme followed the liturgical year. The works in this first part celebrate Advent and Christmas.

An exceptional event took place from 31 October to 1 November 2025 in St Thomas Church in Leipzig, where Bach was cantor: Johannes Lang performed the complete organ works of his illustrious predecessor. The 22-hour programme followed the liturgical year. The works in this second part celebrate Eastertide.

An exceptional event took place from 31 October to 1 November 2025 at St Thomas's Church in Leipzig, where Bach was cantor: Johannes Lang performed the complete organ works of his illustrious predecessor. The 22-hour programme followed the liturgical year. This third part celebrates Pentecost and the three Sundays after Trinity Sunday.

An exceptional event took place from 31 October to 1 November 2025 in St Thomas Church in Leipzig, where Bach was cantor: Johannes Lang performed the complete organ works of his illustrious predecessor. The 22-hour programme followed the liturgical year. This fourth instalment features Clavier-Übung III and chorales in praise of God.