The ornamented melody in crotchets sings in the soprano above a flowing legato semiquaver accompaniment and gently pulsating repeated quavers in the pedal continuo.
A melody originally consisting of four quavers (eighth notes) for example, is augmented if it later appears with four crotchets (quarter notes) instead.
A melody originally consisting of four crotchets (quarter-notes) for example, is diminished if it later appears with four quavers (eighth-notes) instead.
