An austere fugue subject here begins with a strange leap. To play this four-note opening on a keyboard is to outline a symmetrical structure, reminding us of the bare pillar that holds up the structure. Adorned on the structure are two faster, florid themes which enter later in this long piece. 

But our moment today is its ending -- a deceptive ending leads to a brief coda, but when it happens, its harmony strikes us with a surprising dissonance, feeling almost like the resolute major tonic triad that it wants to become. But a pesky A natural, the sixth scale degree, dashes this to pieces. 

Bertrand Cuiller plays the C# minor fugue (with prelude) for the Netherlands Bach Society