Nikolai Demidenko: Bach - Prelude & Fugue No. 9 in E major BWV 878 | WTC Book II

From the Palazzo Labia, Venice, 2000 The Well-Tempered Clavier Book II Nikolai Demidenko - piano Johann Sebastian Bach - Prelude & Fugue No. 9 in E major BWV 878 Watch other Bach´s Preludes and Fugues of The Well-Tempered Clavier: Subscribe to EuroArts: The title of Bach’s Well-Tempered Clavier refers to the new system of tuning keyboard instruments that had been developed by, amongst others, the Halberstadt organist Andreas Werckmeister (1645-1706), to make it possible to play in all 24 major and minor keys, something which hitherto had been impossible with “mean-tone“ tuning. There were, however, several such “well-tempered“ tuning in use at that time, and, contrary to earlier assumptions, there is simply no evidence that Bach wrote his two books of preludes and fugues for our modern “equal temperament“, which is but one of several possible tunings.