After another invocation of the spirits, the sirens appear, singing a sensuous melody (“I dip my white Breast in the soft-flowing Tide”). Then begins the temptation of the wandering Knight. He starts in surprise as he hears the voices rising from the waves, and again they chant their alluring song. They are followed by Armida, who appeals to him in a seductive strain (“O Rinaldo, come to never-ending Bliss”). The Knight joins with her in a duet of melodious beauty. He is about to yield to the temptation, when he hears in the distance the tones of the Crusaders’ song. He wavers in his resolution, Armida and the sirens appeal to him again, and again he turns as if he would follow them. The Crusaders’ song grows louder, and rouses the Knight from the spell which has been cast about him, and the scene closes with a beautifully concerted number, in which Rinaldo, Armida, the chorus of Crusaders and of sirens contend for the mastery. The fascination of the Crusaders’ song is the strongest. The cross triumphs over the sorceress, and in despair she sings,—
“Sink, scenes illusive, deep in dark abyss of doom!
The light of day is turned to blackest night of gloom.”
The third part, entitled “Jerusalem,” is religious in character, and mostly choral. In rapid succession follow the morning hymn with beautiful horn accompaniment, the march of the Pilgrims full of the highest exaltation, the hermit’s revelation of the Holy City to them, their joyous greeting to it, Rinaldo’s resolution to expiate his offence by his valor, the hermit’s last call to strife, their jubilant reply, and the final victory:—
“As our God wills it. Up, arouse thee!
Up! yon flag with hope endows thee.
Jerusalem! the goal is there.
We cry aloud, ‘Hosanna!’”
