The last of the three successive duos is in couplets, two verses total. The design is a small binary form, where Daniel sings during A and the opening of B, then Bettly sings the majority of B. In the second verse, the two sing the final phrase together.
The A section is a clear 8-measure period with modulating consequent. The prominent Eb4s finally give way to D4 as the fifth of the cadence harmony, G minor.
The B section begins with a passage of standing on the dominant, during which Daniel recovers the Eb, then drops to D4 again for the dominant triad (4th measure below). Bettly picks up the passage with a brief minor-mode shift, then puts the focus firmly back on Eb, as Eb5, with a double-neighbor figure (for "allons, allons").
In the second verse, the B section's close, then, brings the voice (Bettly's) back to Eb5 (circled in the example below); and the orchestra drives it home with a repetition of the double-neighbor figure.
