Why Martins embarked on his Bach recording quest is to many a mystery. Where Joao can be brilliant on Lizt, he fails miserably with Bach. He is trying to add more dynamics Bach's keyboard works, but it merely makes things nervous and garbles the polyphony - although one would think the effect would be the opposite. I cannot recommend any of Martin's Bach works, although he plays the Concerti reasonably well as it matches more his style of playing. Glenn Gould, Janos Janda, and Andras Schiff are much better choices for the Well-Tempered, as well as overall.