J.S. Bach: The Well tempered Clavier:

One of the greatest achievements in musical composition history, The Well-Tempered Clavier of Johann Sebastian Bach, is a collection of two sets of preludes and fugues in all 24 major and minor keys. It seem both books, composed two decades apart, were written primarily for educative personal and private use in the home – probably to be played on the intimate clavichord. One of the most famous works written for the keyboard, The Well-Tempered Clavier is simply enjoyable music of the highest craftsmanship.