The second movement of Beethoven’s Sonata No. 24, Op. 78, is a lively Allegro assai built from paired chords, short replies, and quick two-note figures. Strong and soft dynamics alternate frequently. The opening material returns in changing harmonies and registers, with wide exchanges between the hands and an active lower accompaniment. A quieter closing passage, held chords, and a general pause prepare the brief Presto finish.

Opening exchanges: The movement begins with forceful paired chords, followed by a softer response separated by rests. Short descending notes and further chord replies continue the conversation. The right hand then moves in slurred pairs of sixteenth notes while the left follows a longer line of eighth notes. As the phrase grows, the upper figures rise in register and sometimes broaden into intervals. The two hands have different articulations: small upper gestures contrast with the more connected lower pattern.

Returning ideas and changing harmonies: After paired figures move between the hands, the opening returns at the original pace. Its continuation becomes more extended, shifting through different chord shapes and registers. Rising right-hand pairs appear above a lower line that often moves in the opposite direction. Some passages alternate major and minor colors. Crescendos lead to stronger chords, followed by further hand-to-hand exchanges that gradually soften again.

Later returns: The main chordal idea comes back in altered positions, with contrasts between strong statements and quiet answers. Paired upper notes continue above low eighth-note patterns, then small interval figures travel between the hands through the upper register. Rests and changing accents keep these exchanges distinct. A later passage becomes progressively quieter before a Quieto marking introduces another restrained version of the chordal material.

Closing passage and Presto: The final page gives the upper line longer notes while the left continues its eighth-note movement. A crescendo leads to repeated upper accents, then a slowing settles into two chords with fermatas. An ascending arpeggio passes through both hands and reaches a general pause. The short Presto resumes the paired sixteenth-note figure, builds quickly, and ends with a strong separated chord and rests.

Interesting fact: An editorial note specifically describes the alternation of major and minor in the returning paired-note figures as humorous, highlighting a small harmonic surprise within the movement’s quick exchanges.