Three Sonatas, Op. 21: Other Keyboard, Solo, Unaccompanied, Solo

These three sonatas reveal a composer working at the height of his powers, balancing structural coherence with emotional range. The variety across the three works (major keys, minor key, contrasting temperaments) makes this collection work beautifully as a programming unit, and the editing by Fischer and Oberdorffer makes historically informed performance accessible to modern pianists without sacrificing the music's character.

These sonatas move between philosophical introspection and exuberant virtuosity. The A-major sonata radiates optimism and lyrical warmth, the E-minor work explores intricate emotional territories with minor-key pathos and contrapuntal invention, and the C-major piece balances formal clarity with expressive moments that catch the ear. Throughout, Bach's music feels both intellectually rigorous and deeply human.

Advanced pianists preparing for auditions, competitions, or recitals will find substantial technical and musical challenges here. Students in music history courses studying the transition from Baroque to Classical style gain direct access to one of the pivotal composers of that shift. This edition also serves organists and harpsichordists who want an accessible, scholarly transcription for modern keyboard practice.

• Pay attention to voice leading in the slower movements; inner voices often carry thematic material, and clarity here separates a merely competent reading from one that reveals Bach's harmonic sophistication.
• Harpsichord articulation translates to the piano through crisp attacks and shorter note values than Romantic convention would suggest. Allow the inherent resonance of the piano to carry the line rather than using the pedal to create artificial legato.
• The fast movements benefit from sprightly tempos and rhythmic precision. Bach's theatrical manner depends on clarity of articulation and textural definition, especially when figuration becomes dense.
• Shape the Alberti bass patterns and repeated accompanimental figures with subtle dynamic inflection rather than mechanical repetition; this technique was common in the period and prevents these passages from becoming static.

Program these sonatas as a logical bridge in a recital that spans Baroque and Classical periods. Solo the A-major or C-major sonata on a concert exploring music of the German Enlightenment, or use the E-minor work as a centerpiece when programming music that explores minor-key character. Advanced students might perform one sonata per program over a season, deepening their command of Bach's style with each performance.

• Voice leading and independence of hands across three or more independent lines
• Harpsichord idioms on the modern piano (articulation, phrasing, and texture)
• Structural analysis of Classical sonata form emerging from Baroque models
• Rapid scale passages, hand independence, and technical security in multiple registers
• Expressive control and character differentiation across contrasting movements
• Historically informed interpretation without sacrificing modern pianism