and when he goes to open the wicket, Marcellina expresses no sympathy for his sufferings, but ecstatically proclaims her love for Fidelio as the reason why she must needs say nay. And this she does, not amiably or sympathetically, but pettishly and with an impatient reiteration of "No, no, no, no!" in which the bassoon drolly supports her. A second knocking at the door, then a third, and finally she is relieved of her tormentor by Rocco, who calls him out into the garden. Left alone, Marcellina sings her longing for Fidelio and pictures the domestic bliss which shall follow her union with him. Rocco and Jaquino enter, and close after them Leonore, wearied by the weight of some chains which she had carried to the smith for repairs. She renders an account for purchases of supplies, and her thrift rejoices the heart of Rocco, who praises her zeal in his behalf and promises her a reward. Her reply, that she does not do her duty merely for the sake of wage, he interprets as an allusion to love for his daughter. The four now give expression to their thoughts and emotions. Marcellina indulges her day-dream of love; Leonore reflects upon the dangerous position in which her disguise has placed her; Jaquino observes with trepidation the disposition of Rocco to bring about a marriage between his daughter and Fidelio. Varied and contrasting emotions, these, yet Beethoven has cast their expression in the mould of a canon built on the following melody, which is sung in turn by each of the four personages:-- [Musical excerpt]