The Tres pequeñas piezas para piano (Three short piano pieces) were composed in the brief time span from February 3 to 7, 1987. The first one, Fantasía, starts with a phrase that is repeated in crescendo with gradual refinement in ornamentation and counterpoint until a climax is reached. Then it dissolves in a reverse process to reach a coda in which the theme is presented in augmentation and accelerating opposed to a counter-motif in stretto. The piece is written with permanent time signature changes. The second piece, Ludio, consists in an ample and expressive atonal melody against an obstinato in the bass. The title gives autonomy to the suffix -ludio (-lude) that is part of words such as prelude or interlude. The third composition, Invención (Invention), is sort of a homage to Bach in a more contemporary style, where the subject and counter-subject imbricate and mutate using counterpoint resources. It ends with an offbeat chord that dissipates in a single blow the chromatism prevailing in the whole work.