The Prelude (Allegretto, completed October 29, 1950) is a lovely, tranquil, and serenade-like piece. The arpeggios heard at the beginning, in particular, evoke the impression of a plucked string instrument within an intimate space. In the middle section of the piece, following an unexpected modulation, the melodic and accompanying figures are interchanged, yet the overall texture and atmosphere remain homogeneous.

The Fugue (3 voices, Allegretto, completed November 1, 1950) is based on a light and simple subject characterized by staccato notes and repeated tones. Conversely, the counter-subject is played legato, creating a distinctive effect. The staccato timbre appears continuously even in the episodes where the subject is absent, thus functioning as a fundamental element of the entire piece. Furthermore, this contributes to an original sound in the stretto, where the subject overlaps in all three voices.