The Bach album comprises four preludes and one fugue from the Well-Tempered Clavier, as well as the Allemande from the fourth Partita, interspersed with seven compositions or improvisations by Mehldau inspired by the complementary works of Bach—including Mehldau’s Variations on Bach’s Goldberg Theme.

Brad Mehldau, speaking of the “universality” of Bach’s music, says in his liner notes: “The more you try to engage with him, the more your own personality becomes visible, unavoidably. You are not playing Bach—Bach is playing you, in the sense that he lays you bare ... The greatest choice you make at all times is not out of an absence, but from what is there, in its totality. Specifically, it is the constant choice you make in how to negotiate between harmony and melody.”