Scarlatti’s Sonata in D Minor, L. 58 / K. 64 is a bold Baroque keyboard sonata with a strong, energetic character. The music is written in 2/4 time and marked Allegro maestoso, giving it a lively but dignified feeling. The piece uses repeated sections, accented chords, quick right-hand figures, ornaments, and steady harmonic patterns that give it both brilliance and strength.

Measures 1–16 present the first main section. The piece opens with a strong accented chord, followed by quick melodic figures and repeated chordal support. The right hand uses short runs, ornaments, and crisp articulation, while the left hand provides a firm harmonic foundation.

Measures 17–25 begin the second section with a lighter dynamic and more flowing motion. The hands move in a more balanced texture, with the melody and accompaniment passing through shorter phrases before the music builds again.

Measures 26–30 return to stronger chordal writing and accented rhythms. The texture becomes more dramatic, with clear contrasts between softer passages and fuller, more forceful moments.

Measures 31–38 develop the main material through repeated patterns, ornaments, and a gradual crescendo. The music becomes more energetic as the phrases push forward toward the final section.

Measures 39–47 bring the sonata to a strong close. The music continues with quick figures, accented chords, and a final buildup to a bright, firm cadence. The ending keeps the same bold character that was introduced at the beginning.

Interesting fact: Domenico Scarlatti wrote hundreds of short keyboard sonatas, many of them in one-movement binary form. His sonatas often combine Baroque clarity with brilliant keyboard effects, including hand crossings, repeated notes, quick ornaments, and dance-like rhythms.