The Prelude & Fugue as a form is used here to explore the thirty keys, using all existing key signatures, not without light provocation in these times of tonal scarcity. This number is achieved by accepting not to sacrifice one of the two enharmonic keys, as the situation presents itself, (for example, C# major and Db major provide two different preludes and fugues, etc.) and which implies an arch-like presentation, of which C major and its relative minor are the keystones.
Though an hommage to Bach is implicit, this work is in no way an exercise in style, with the strict observances that would imply, but it is rather a search for the same internal logic. The musical language has kept its singularities, and its principles are that each idea generates its own substance, in both the preludes and the fugues, with only one purpose: expression. The work is naturally destined to be played by any keyboard instrument.
Stéphane Delplace (Translation by Marta Luce).