In that time, he notated a number of the blind composer's final works, including parts of the Orgelbüchlein. According to Bach's biographer Philipp Spitta, he was present at Bach's deathbed, and took over his duties for nine weeks.
During that period, he recorded a number of the blind composer's final works, including parts of the Orgelbüchlein. According to Bach biographer Philipp Spitta, he was present at Bach's deathbed and took over his duties for nine weeks.