The first movement of Beethoven’s Sonata No. 17, Op. 31, No. 2, alternates quiet, questioning passages with fast, unsettled music in D minor. A slowly rolled chord opens the movement, followed by short upper phrases and pauses. The faster sections expand these gestures into repeated triplets, driving bass lines, and wide arpeggios. Near the return, unaccompanied passages marked like a recitative interrupt the steady pulse. The movement eventually settles into a soft, sustained close.

Opening contrasts: The Largo begins low on the keyboard with a rolled chord that supports a rising upper line. A pause leads into Allegro, where descending two-note figures sound above detached left-hand chords. The music briefly slows into Adagio, then returns to another quiet Largo chord. As the fast idea develops, the right hand climbs higher, accents become stronger, and the bass joins the moving figures. These changes turn the hesitant beginning into a forceful arrival.

Main and contrasting themes: A broad bass gesture now appears beneath continuous triplets. The melody then moves into a higher voice while the repeated accompaniment continues between the hands. The score includes hand-crossing indications in this passage. A contrasting upper melody follows above broken chords, alternating held notes with quicker pairs and short rests. Later phrases combine sustained chords with moving bass figures. The closing idea places a smoother upper line over a middle voice and bass notes, before first and second endings mark the exposition repeat.

Development and recitative: Slow broken chords open the central section. They spread across the keyboard and pause before the triplet texture returns, now with repeated upper intervals above a lower melody. Sequences, accents, and changing registers build the intensity. The hands briefly share similar running patterns, then longer chords and a descending line reduce the motion. A quiet Largo leads into an unaccompanied upper passage. Its short phrases, dotted rhythms, and pauses create a speech-like interruption before the faster music resumes.

Return and coda: The recitative returns once more before widely spaced arpeggios and stronger chords lead into the earlier contrasting theme. Familiar figures reappear in altered registers and harmonies. The coda recalls the broad bass gesture, then places a sustained upper chord over a soft left-hand broken-note pattern. The final measures slow and end with held chords and a fermata.

Interesting fact: The score explicitly marks one of the quiet solo passages “senza rigore del tempo, quasi Recitativo,” asking for a recitative-like passage without strict time.