The song's chorus is sung in the male voice about his blonde girlfriend. In the verses, the birds in his father's garden are singing for all the girls who don't have husbands and the singer asks, "What would you give, my beuty, to have a husband?", to which she replies, "I would give Versailles, Paris and Saint-Denis; the towers of Notre-Dame, and those of Amiens as well."

The chorus, each time, is the male voice.

Hope this explains it?

A