First movement

Haydn's Sonata in D, Hob. XVI:37 (probably composed in the early 1780s) is one of his most-played keyboard sonatas — bright, witty, and built on memorable thematic material that allows a candidate to display Classical poise without the technical demands of the Beethoven sonatas. The first movement is in D major with a cheerful Allegro con brio tempo; the second is a Largo and the third a Presto rondo that completes the set.

Technically the movement tests proper Classical poise. The right hand carries the principal melody, an ornamental second theme, and bright running passagework; the left hand has Alberti-bass support and clear cadential figures. The development section explores remote keys and demands confident hand-position management; the recapitulation returns the material with characteristic Haydn humour — small surprises that the performer must voice.

Two pitfalls. First, the Alberti bass can become mechanical — Haydn's writing rewards a left hand that holds pulse but breathes with the melody. Second, students often miss the Haydnian wit — the small surprises in the recapitulation, the unexpected pauses, the harmonic side-steps — and play the piece as a generic Classical reading. Reading the score with attention to the jokes makes the piece come alive.

Haydn's complete keyboard sonatas are on IMSLP in clean public-domain editions. Hearing the surrounding sonatas — particularly the C-major Hob. XVI:50 — calibrates the variety of Haydnian poise across the corpus.