Ferdinand Beyer - I due Foscari - Fantasia instructiva

Measures 1-24 open with Allegro marcato in common time. Accented upper chords and dotted melodic phrases move above bass notes and chord groups. A quieter passage over held lower chords follows in measures 19-22, and an ornamental upper phrase expands into a rising and falling run before the next section.

Measures 25-53 form the Andante maestoso in 12/8. A slurred upper melody moves above continuous lower broken-note figures. Paired notes and chords broaden the later phrases, with rapid upper runs and held pauses. The accompaniment becomes more closely spaced in measure 42, and the section ends with an extended rising and falling upper passage.

Measures 54-68 are marked Allegro moderato and begin in a contrasting key. Descending figures pass between the parts, then a new upper melody enters over broad lower arpeggios. Allegro mosso begins at measure 69: high upper octaves, dotted phrases, and short ornamental replies continue above a fuller lower texture. Measures 85-96 expand into rapid rising and falling runs that alternate between the parts before two short closing replies.

Measures 99-160 form the Vivo section in 6/8. Short upper chord phrases alternate with ornamental rising figures over lower broken-note patterns. A passage marked leggiero begins at measure 116, and accented chord replies lead to a quieter melodic passage from measure 126. Paired notes and octave lines gradually fill out the texture. Agitato begins at measure 152 with emphatic chords in both parts, followed by a rest, isolated bass notes, and the final held bass octaves.