Marie-Claire Alain plays one of Bach’s gems for organ

I consider ‘O Mensch, bewein dein Sünde gross’ (BWV 622) one of Bach’s most beautiful works for organ.

It’s played here by world renowned organ player Marie-Claire Alain. Brilliant architecture and moving at the same time, one of Bach’s trademarks. I’ve cherished the beauty of this piece ever since I first heard it as a child.