You can't say A without saying B: pianist Marcel Worms took up the challenge, to record the second book after his double album with the complete first book of Bach's Well-Tempered Clavier (2020). Bach completed the second book twenty years after the first, and in those two decades his composing has deepened even further. The Preludes have emancipated and are sometimes longer than the accompanying Fugues, the complexity of the music has increased, and the work as a whole is more abstract and spiritual. Add to that the length of the work (about half an hour longer than book I) and the assignment for the pianist is clear.